ASTROSAT CZTI

Data Quality Report

Orbit 56327

Creation date: 2026-02-25T12:26:00.155275
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/AS1A14_049T01_9000006552_56327cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56327cztM0_level2_quad_clean.evt
Size (bytes)3,292,778,880241,099,200
Size3.1 GB 229.9 MB
Events in quadrant A33,192,7711,562,053
Events in quadrant B21,638,0492,069,892
Events in quadrant C20,188,7691,934,650
Events in quadrant D44,986,50756,543

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04940
D04940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01155046
B0815373
C07741817
D01505283

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24344756431.071311%
B24344412516.944627%
C24343282311.596763%
D243452376897.629903%

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 26124 24347 7152 7152 27.38% 29.38%
B 26124 24347 3089 3089 11.82% 12.69%
C 26125 24347 2166 2166 8.29% 8.90%
D 26124 24344 12669 12669 48.50% 52.04%

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 11 31 15801837 28366.65 2229 2164 557.0
A 7 64 2142072 3841.98 2229 2164 557.0
A 0 8 1883003 3376.85 2229 2164 557.0
B 5 172 8729536 17908.26 2311 2224 487.3
B 5 185 1371138 2808.98 2311 2224 487.3
B 0 231 1182340 2421.57 2311 2224 487.3
C 15 198 4148063 6418.1 2351 2336 645.9
C 12 252 2179296 3370.2 2351 2336 645.9
C 15 148 1730958 2676.12 2351 2336 645.9
D 8 129 40941536 381138.74 357 341 107.4
D 12 3 1247368 11609.1 357 341 107.4
D 2 249 579576 5392.34 357 341 107.4

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