ASTROSAT CZTI

Data Quality Report

Orbit 56022

Creation date: 2026-02-07T00:15:27.128676
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_56022cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56022cztM0_level2_quad_clean.evt
Size (bytes)435,962,88089,562,240
Size415.8 MB 85.4 MB
Events in quadrant A4,034,900569,092
Events in quadrant B3,506,058614,884
Events in quadrant C2,813,281567,620
Events in quadrant D5,286,263514,010

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166801
B0150311
C0133911
D0201224

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63953645.691947%
B63962664.158849%
C6396390.609756%
D63954416.896013%

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 7170 6396 226 226 3.15% 3.53%
B 7171 6397 132 132 1.84% 2.06%
C 7171 6397 19 19 0.26% 0.30%
D 7170 6396 403 403 5.62% 6.30%

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 12 115 1157810 7004.91 670 655 165.2
A 15 32 107477 646.65 670 655 165.2
A 0 8 95870 576.39 670 655 165.2
B 5 185 487100 3342.85 666 642 145.5
B 0 231 162519 1112.39 666 642 145.5
B 4 171 67387 458.66 666 642 145.5
C 3 233 82726 448.73 659 653 182.9
C 12 252 59133 319.74 659 653 182.9
C 13 3 30903 165.39 659 653 182.9
D 11 129 1262984 6871.83 646 616 183.7
D 8 160 409215 2224.25 646 616 183.7
D 8 129 251143 1363.77 646 616 183.7

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