ASTROSAT CZTI

Data Quality Report

Orbit 56025

Creation date: 2026-02-04T20:38:28.799142
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_066T02_9000006546_56025cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56025cztM0_level2_quad_clean.evt
Size (bytes)657,800,64083,203,200
Size627.3 MB 79.3 MB
Events in quadrant A9,539,613427,469
Events in quadrant B3,599,398626,297
Events in quadrant C3,589,265561,857
Events in quadrant D7,134,538464,312

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326601
B0151861
C0152335
D0255911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6282222435.402738%
B62822223.533906%
C62821993.167781%
D6282114018.147087%

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 7327 6283 1937 1937 26.44% 30.83%
B 7327 6282 112 112 1.53% 1.78%
C 7327 6283 143 143 1.95% 2.28%
D 7327 6283 958 958 13.07% 15.25%

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 15 32 5865298 41346.42 573 558 141.8
A 12 115 1227603 8650.67 573 558 141.8
A 0 8 117544 824.75 573 558 141.8
B 5 185 681141 4783.33 656 631 142.3
B 4 171 81678 569.68 656 631 142.3
B 10 247 75350 525.2 656 631 142.3
C 13 3 803505 4449.54 647 641 180.4
C 12 252 138893 766.2 647 641 180.4
C 9 237 55147 302.08 647 641 180.4
D 11 129 3254343 18869.17 605 578 172.4
D 6 239 660658 3827.92 605 578 172.4
D 8 160 471319 2729.91 605 578 172.4

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