ASTROSAT CZTI

Data Quality Report

Orbit 53502

Creation date: 2025-08-19T01:23:50.550889
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_002T07_9000006498_53502cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53502cztM0_level2_quad_clean.evt
Size (bytes)929,669,76075,487,680
Size886.6 MB 72.0 MB
Events in quadrant A9,375,734481,062
Events in quadrant B6,520,531597,311
Events in quadrant C14,691,870167,319
Events in quadrant D3,314,024578,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323801
B0238361
C0481581
D0146051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6608202230.599274%
B6608119618.099274%
C6608504276.301453%
D6609570.862460%

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 7408 6609 1799 1799 24.28% 27.22%
B 7408 6609 910 910 12.28% 13.77%
C 7408 6609 4508 4508 60.85% 68.21%
D 7409 6610 46 46 0.62% 0.70%

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 3 63 5034276 32186.42 630 615 156.4
A 3 62 1159566 7410.61 630 615 156.4
A 15 174 679253 4339.37 630 615 156.4
B 4 206 3271588 23117.91 657 633 141.5
B 4 171 267841 1888.53 657 633 141.5
B 10 28 81525 571.72 657 633 141.5
C 7 64 9682274 91016.55 388 382 106.4
C 1 241 1055136 9915.43 388 382 106.4
C 12 254 899733 8454.53 388 382 106.4
D 3 12 193349 978.15 700 671 197.0
D 8 208 97669 492.42 700 671 197.0
D 1 0 93681 472.17 700 671 197.0

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