ASTROSAT CZTI

Data Quality Report

Orbit 20190731_A05_013T01_9000003070_level2

Creation date: 2021-09-01T02:23:39.526345
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A05_013T01_9000003070cztM0_level2_bc.evt modeM0/AS1A05_013T01_9000003070cztM0_level2_quad_clean.evt
Size (bytes)18,790,084,8006,079,377,600
Size17.5 GB 5.7 GB
Events in quadrant A91,497,97740,701,903
Events in quadrant B106,810,89240,096,286
Events in quadrant C88,214,80039,135,619
Events in quadrant D254,289,81735,749,486

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084630
B084650
C084630
D084620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08736380
B09369270
C08781650
D014158960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06830
B06850
C06860
D06860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41565241300.993620%
B41564478541.889598%
C41563863061.517186%
D4153115127312.345688%

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 499184 416204 63 63 0.01% 0.02%
B 499184 416119 220 220 0.04% 0.05%
C 499184 416178 28 28 0.01% 0.01%
D 499184 415734 28360 28360 5.68% 6.82%

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 5 16 1575923 308.81 23341 23026 5028.6
A 13 252 170480 29.32 23341 23026 5028.6
A 0 226 152652 25.78 23341 23026 5028.6
B 7 220 5644988 1319.9 22975 22512 4259.8
B 0 189 2352361 546.94 22975 22512 4259.8
B 3 64 2134146 495.72 22975 22512 4259.8
C 9 54 1936388 367.57 22173 22107 5208.0
C 3 233 523876 96.35 22173 22107 5208.0
C 7 247 500763 91.91 22173 22107 5208.0
D 1 52 93547369 18719.23 21593 20921 4996.3
D 1 20 48288262 9660.66 21593 20921 4996.3
D 12 227 11223547 2242.2 21593 20921 4996.3

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