ASTROSAT CZTI

Data Quality Report

Orbit 56178

Creation date: 2026-02-15T05:11:21.877664
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_083T04_9000006550_56178cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56178cztM0_level2_quad_clean.evt
Size (bytes)798,975,36088,588,800
Size762.0 MB 84.5 MB
Events in quadrant A13,264,011373,918
Events in quadrant B4,839,448676,706
Events in quadrant C6,001,376549,331
Events in quadrant D4,847,072522,170

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0449020
B0199360
C0239700
D0201430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8045369445.916718%
B80442342.909000%
C804591411.361094%
D80452342.908639%

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 8323 8255 2818 2818 33.86% 34.14%
B 8322 8322 124 124 1.49% 1.49%
C 8323 8323 623 623 7.49% 7.49%
D 8323 8323 175 175 2.10% 2.10%

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 0 212 4158495 24193.0 682 664 171.9
A 15 32 2246687 13068.84 682 664 171.9
A 3 78 2184339 12706.06 682 664 171.9
B 4 171 473216 2683.37 831 805 176.1
B 5 172 341664 1936.14 831 805 176.1
B 10 247 278393 1576.75 831 805 176.1
C 12 254 2598397 12236.34 769 760 212.3
C 12 252 148729 697.02 769 760 212.3
C 1 12 63725 296.6 769 760 212.3
D 2 249 319319 1400.64 799 761 227.4
D 8 129 299167 1312.04 799 761 227.4
D 8 240 201932 884.51 799 761 227.4

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