ASTROSAT CZTI

Data Quality Report

Orbit 56359

Creation date: 2026-02-27T07:36:56.975509
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_083T05_9000006554_56359cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56359cztM0_level2_quad_clean.evt
Size (bytes)1,142,208,00057,375,360
Size1.1 GB 54.7 MB
Events in quadrant A15,254,986121,818
Events in quadrant B5,957,632585,158
Events in quadrant C3,990,778562,694
Events in quadrant D16,575,76514,223

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0497261
B0221541
C0166781
D0536331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6502536782.543833%
B650293714.410950%
C65033134.813163%
D6503634497.554975%

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 7541 6501 5240 5240 69.49% 80.60%
B 7542 6503 732 732 9.71% 11.26%
C 7543 6504 291 291 3.86% 4.47%
D 7542 6502 6182 6182 81.97% 95.08%

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 12 3 11080952 110731.23 386 375 100.1
A 12 194 1297884 12966.36 386 375 100.1
A 1 191 464620 4639.33 386 375 100.1
B 4 206 1635336 11949.42 638 616 136.8
B 5 172 1085761 7932.16 638 616 136.8
B 5 185 285730 2084.12 638 616 136.8
C 15 230 978587 5420.2 652 646 180.4
C 12 252 130642 720.5 652 646 180.4
C 13 3 123441 680.59 652 646 180.4
D 8 129 15543704 498894.53 97 92 31.2
D 8 113 414395 13297.65 97 92 31.2
D 3 12 61266 1963.47 97 92 31.2

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