ASTROSAT CZTI

Data Quality Report

Orbit 57425

Creation date: 2026-05-10T01:14:28.965522
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_102T01_9000006572_57425cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57425cztM0_level2_quad_clean.evt
Size (bytes)518,915,52093,559,680
Size494.9 MB 89.2 MB
Events in quadrant A5,721,892608,354
Events in quadrant B3,293,787667,853
Events in quadrant C5,750,055545,843
Events in quadrant D3,934,406553,928

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216411
B0146641
C0217681
D0163841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65533585.463147%
B6553580.885091%
C655371910.972074%
D65531752.670533%

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 7358 6554 255 255 3.47% 3.89%
B 7358 6554 8 8 0.11% 0.12%
C 7358 6554 642 642 8.73% 9.80%
D 7358 6554 156 156 2.12% 2.38%

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 7 64 1640584 9758.63 681 661 168.0
A 10 251 968344 5758.36 681 661 168.0
A 8 4 355242 2109.99 681 661 168.0
B 0 216 411490 2794.91 686 660 147.0
B 5 185 47058 315.65 686 660 147.0
B 0 245 35630 237.9 686 660 147.0
C 15 224 2788707 16051.43 635 628 173.7
C 14 254 238635 1370.25 635 628 173.7
C 6 223 173410 994.73 635 628 173.7
D 8 240 334450 1779.28 660 628 187.6
D 15 142 311492 1656.91 660 628 187.6
D 3 12 245817 1306.86 660 628 187.6

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