ASTROSAT CZTI

Data Quality Report

Orbit 57526

Creation date: 2026-05-16T20:13:22.118484
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_113T09_9000006574_57526cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57526cztM0_level2_quad_clean.evt
Size (bytes)404,208,00095,996,160
Size385.5 MB 91.5 MB
Events in quadrant A3,267,262625,860
Events in quadrant B3,423,175664,578
Events in quadrant C3,949,759593,164
Events in quadrant D3,812,861567,002

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145421
B0145231
C0164981
D0159321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65451432.184874%
B65461432.184540%
C65462163.299725%
D65461542.352582%

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 7430 6546 32 32 0.43% 0.49%
B 7431 6547 19 19 0.26% 0.29%
C 7431 6547 133 133 1.79% 2.03%
D 7431 6547 85 85 1.14% 1.30%

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 320912 1825.95 713 693 175.4
A 7 14 160453 910.98 713 693 175.4
A 13 248 12316 66.28 713 693 175.4
B 4 206 364786 2443.93 692 664 149.0
B 5 185 122124 815.22 692 664 149.0
B 10 247 66174 439.69 692 664 149.0
C 15 224 1025460 5529.86 679 670 185.3
C 14 246 114603 614.79 679 670 185.3
C 12 252 103727 556.1 679 670 185.3
D 15 142 414003 2126.52 690 660 194.4
D 2 31 252977 1298.09 690 660 194.4
D 3 12 162821 834.27 690 660 194.4

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