ASTROSAT CZTI

Data Quality Report

Orbit 55792

Creation date: 2026-01-20T04:13:57.111347
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_127T10_9000006542_55792cztM0_level2.fits modeM0/AS1A14_127T10_9000006542_55792cztM0_level2_quad_clean.evt
Size (bytes)590,402,88091,258,560
Size563.1 MB 87.0 MB
Events in quadrant A8,300,537520,544
Events in quadrant B3,084,904678,107
Events in quadrant C3,242,736604,303
Events in quadrant D6,716,606501,427

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291821
B0139471
C0146911
D0245201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6575140421.353612%
B6575440.669202%
C6576801.216545%
D657698715.009124%

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 7611 6576 1445 1445 18.99% 21.97%
B 7611 6576 1 1 0.01% 0.02%
C 7612 6577 69 69 0.91% 1.05%
D 7612 6577 869 869 11.42% 13.21%

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 12 115 2905503 17941.55 643 625 161.9
A 15 32 2460676 15194.14 643 625 161.9
A 8 192 300627 1852.92 643 625 161.9
B 7 0 246157 1646.83 690 663 149.1
B 0 199 45355 299.8 690 663 149.1
B 7 252 26272 171.79 690 663 149.1
C 12 250 336440 1796.65 681 675 186.9
C 9 38 116005 617.12 681 675 186.9
C 15 200 52105 275.2 681 675 186.9
D 11 129 3580798 19759.39 637 609 181.2
D 15 125 214752 1181.87 637 609 181.2
D 3 12 101054 554.37 637 609 181.2

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