ASTROSAT CZTI

Data Quality Report

Orbit 54996

Creation date: 2025-11-27T15:18:32.799539
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_014T01_9000006528_54996cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54996cztM0_level2_quad_clean.evt
Size (bytes)699,603,84071,032,320
Size667.2 MB 67.7 MB
Events in quadrant A4,559,812561,614
Events in quadrant B2,774,315622,370
Events in quadrant C2,936,183551,413
Events in quadrant D15,170,1895,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177701
B0125031
C0129981
D0491321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58662083.545857%
B5866761.295602%
C5867510.869269%
D5867582299.232998%

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 6981 5867 115 115 1.65% 1.96%
B 6981 5867 17 17 0.24% 0.29%
C 6982 5868 30 30 0.43% 0.51%
D 6981 5866 5723 5723 81.98% 97.56%

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 3 14 1270865 7922.93 637 622 160.3
A 15 32 429624 2675.83 637 622 160.3
A 13 248 289567 1802.24 637 622 160.3
B 10 245 88176 633.52 636 613 138.2
B 5 236 65982 472.94 636 613 138.2
B 5 185 60960 436.61 636 613 138.2
C 13 3 227074 1308.44 626 619 173.1
C 7 220 118302 679.96 626 619 173.1
C 1 16 38918 221.29 626 619 173.1
D 15 94 13725157 332976.78 138 132 41.2
D 2 62 612157 14848.07 138 132 41.2
D 11 129 139241 3374.86 138 132 41.2

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