ASTROSAT CZTI

Data Quality Report

Orbit 57316

Creation date: 2026-05-02T18:08:23.486329
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_049T03_9000006570_57316cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57316cztM0_level2_quad_clean.evt
Size (bytes)451,330,56097,384,320
Size430.4 MB 92.9 MB
Events in quadrant A3,177,055639,055
Events in quadrant B3,400,075681,880
Events in quadrant C5,098,987593,876
Events in quadrant D4,507,178564,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142601
B0147621
C0199411
D0180181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67331031.529779%
B67341442.138402%
C67343705.494505%
D67343405.049005%

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 7578 6733 38 38 0.50% 0.56%
B 7579 6734 45 45 0.59% 0.67%
C 7579 6734 314 314 4.14% 4.66%
D 7579 6734 287 287 3.79% 4.26%

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 0 12 193884 1059.62 739 720 182.3
A 3 14 99892 544.02 739 720 182.3
A 13 254 10053 51.2 739 720 182.3
B 5 185 211783 1353.63 721 694 155.9
B 10 16 123058 784.67 721 694 155.9
B 7 252 78933 501.72 721 694 155.9
C 15 224 1933919 10160.38 697 689 190.3
C 12 250 157974 826.63 697 689 190.3
C 6 223 94373 492.37 697 689 190.3
D 3 224 715027 3557.49 710 679 200.8
D 2 249 657017 3268.6 710 679 200.8
D 3 12 133528 661.59 710 679 200.8

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