ASTROSAT CZTI

Data Quality Report

Orbit 20161118_A02_152T01_9000000806_level2

Creation date: 2025-11-07T20:13:18.664330
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/AS1A02_152T01_9000000806cztM0_level2.fits modeM0/AS1A02_152T01_9000000806cztM0_level2_quad_clean.evt
Size (bytes)270,659,520278,832,960
Size258.1 MB 265.9 MB
Events in quadrant A1,647,9681,713,161
Events in quadrant B1,603,1441,730,289
Events in quadrant C1,605,4161,573,905
Events in quadrant D1,390,2881,478,420

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05860
B05840
C05860
D05860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0602660
B0622360
C0591580
D0611450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0650
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A283293521.242543%
B283544841.706990%
C282502110.746903%
D282762500.884142%

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 39721 30003 0 0 0.00% 0.00%
B 39721 30060 0 0 0.00% 0.00%
C 39721 29937 0 0 0.00% 0.00%
D 39721 30025 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 0 29 1543 10.51 428 400 108.8
A 7 110 1394 9.14 428 400 108.8
A 0 28 1195 7.31 428 400 108.8
B 2 9 1364 11.23 422 401 85.8
B 12 226 1107 8.23 422 401 85.8
B 3 17 1070 7.8 422 401 85.8
C 1 65 1179 6.85 424 393 114.8
C 1 80 1154 6.63 424 393 114.8
C 1 81 1131 6.43 424 393 114.8
D 6 231 1061 6.51 396 359 107.8
D 7 3 1049 6.4 396 359 107.8
D 1 3 1022 6.15 396 359 107.8

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