ASTROSAT CZTI

Data Quality Report

Orbit 34902

Creation date: 2022-03-13T09:04:10.611737
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/AS1A11_053T01_9000004996_34902cztM0_level2.evt modeM0/AS1A11_053T01_9000004996_34902cztM0_level2_quad_clean.evt
Size (bytes)185,803,20048,021,120
Size177.2 MB 45.8 MB
Events in quadrant A1,094,285315,849
Events in quadrant B1,284,108325,629
Events in quadrant C1,300,546327,577
Events in quadrant D1,776,398305,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050651
B055081
C053891
D070431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249620.080128%
B2496481.923077%
C2496321.282051%
D2496110.440705%

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 2496 2496 0 0 0.00% 0.00%
B 2496 2496 36 36 1.44% 1.44%
C 2496 2496 30 30 1.20% 1.20%
D 2496 2496 13 13 0.52% 0.52%

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 10 83 29052 517.38 271 266 55.6
A 13 6 8573 149.31 271 266 55.6
A 13 254 4357 73.53 271 266 55.6
B 5 172 106401 2031.94 272 266 52.2
B 0 190 37410 711.12 272 266 52.2
B 0 218 33620 638.56 272 266 52.2
C 15 214 112619 1770.63 267 269 63.5
C 0 10 88708 1393.79 267 269 63.5
C 12 250 31447 491.36 267 269 63.5
D 8 195 427513 6642.89 262 255 64.3
D 12 217 265826 4129.02 262 255 64.3
D 12 128 32381 499.49 262 255 64.3

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