ASTROSAT CZTI

Data Quality Report

Orbit 20210319_T03_286T01_9000004268_level2

Creation date: 2021-03-26T13:03:59.084117
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_286T01_9000004268cztM0_level2_bc.evt modeM0/AS1T03_286T01_9000004268cztM0_level2_quad_clean.evt
Size (bytes)10,289,874,2404,008,784,320
Size9.6 GB 3.7 GB
Events in quadrant A55,368,97826,204,261
Events in quadrant B57,478,24026,865,115
Events in quadrant C57,208,38225,853,950
Events in quadrant D123,502,57324,316,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04190
B04190
C04190
D04190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054100
B054100
C054100
D054100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05492570
B05556520
C05659660
D07786940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26557229081.094995%
B26557239441.485096%
C26557279572.996174%
D265572174276.562062%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 307508 265563 23 23 0.01% 0.01%
B 307508 265549 58 58 0.02% 0.02%
C 307508 265554 16 16 0.01% 0.01%
D 307508 265555 3390 3390 1.10% 1.28%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 96 908841 297.97 13989 13769 3003.9
A 13 254 449749 145.14 13989 13769 3003.9
A 0 13 256815 80.91 13989 13769 3003.9
B 0 189 554407 201.08 14293 13974 2687.7
B 15 33 546893 198.28 14293 13974 2687.7
B 0 229 542884 196.79 14293 13974 2687.7
C 10 22 1476061 448.1 13698 13664 3263.5
C 3 233 1473594 447.35 13698 13664 3263.5
C 14 254 562799 168.26 13698 13664 3263.5
D 7 80 21455825 6928.32 13508 13084 3094.9
D 7 238 18440471 5954.03 13508 13084 3094.9
D 8 195 14977788 4835.21 13508 13084 3094.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter