ASTROSAT CZTI

Data Quality Report

Orbit 20220506_A09_142T05_9000005118_level2

Creation date: 2026-01-02T11:31:53.126021
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/AS1A09_142T05_9000005118cztM0_level2.fits modeM0/AS1A09_142T05_9000005118cztM0_level2_quad_clean.evt
Size (bytes)314,337,600289,716,480
Size299.8 MB 276.3 MB
Events in quadrant A1,918,3041,699,767
Events in quadrant B1,807,4781,675,435
Events in quadrant C1,824,9941,573,557
Events in quadrant D1,613,9021,470,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0696360
B0801100
C0858750
D0789040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07020
B07020
C07020
D07020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34262420.122585%
B342629632.810694%
C3426212163.549121%
D342625941.733699%

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 45523 34262 0 0 0.00% 0.00%
B 45523 34256 0 0 0.00% 0.00%
C 45523 34253 0 0 0.00% 0.00%
D 45523 34249 0 0 0.00% 0.00%

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 9 19 1582 8.74 499 467 127.5
A 7 110 1568 8.63 499 467 127.5
A 0 29 1505 8.14 499 467 127.5
B 2 9 1604 11.97 477 453 96.1
B 3 80 1435 10.22 477 453 96.1
B 2 8 1297 8.78 477 453 96.1
C 3 202 1399 7.47 483 450 127.1
C 3 203 1394 7.43 483 450 127.1
C 3 187 1237 6.19 483 450 127.1
D 4 160 1267 6.77 460 419 125.3
D 6 38 1195 6.19 460 419 125.3
D 1 3 1183 6.1 460 419 125.3

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