ASTROSAT CZTI

Data Quality Report

Orbit 53802

Creation date: 2025-09-08T05:29:18.465134
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_022T04_9000006506_53802cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53802cztM0_level2_quad_clean.evt
Size (bytes)885,522,24071,000,640
Size844.5 MB 67.7 MB
Events in quadrant A15,170,729100,951
Events in quadrant B3,802,166626,453
Events in quadrant C6,334,274527,356
Events in quadrant D6,979,815450,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494431
B0159541
C0232291
D0251581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6360543085.377358%
B63602954.638365%
C636076111.965409%
D6360122719.292453%

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 7415 6361 5218 5218 70.37% 82.03%
B 7415 6361 166 166 2.24% 2.61%
C 7415 6361 638 638 8.60% 10.03%
D 7415 6361 1002 1002 13.51% 15.75%

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 63 12352302 120291.88 408 398 102.7
A 3 78 1026525 9993.18 408 398 102.7
A 5 241 80249 777.65 408 398 102.7
B 5 185 567518 4010.12 653 628 141.4
B 8 234 506861 3581.04 653 628 141.4
B 0 213 40993 285.54 653 628 141.4
C 15 224 3227773 18849.28 619 614 171.2
C 12 2 146457 851.84 619 614 171.2
C 1 241 102486 595.02 619 614 171.2
D 11 245 1456927 8743.57 578 554 166.6
D 1 241 986153 5917.2 578 554 166.6
D 0 5 460572 2761.79 578 554 166.6

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