ASTROSAT CZTI

Data Quality Report

Orbit 20190607_A05_103T05_9000002974_level2

Creation date: 2025-12-01T07:23:18.766601
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/AS1A05_103T05_9000002974cztM0_level2.fits modeM0/AS1A05_103T05_9000002974cztM0_level2_quad_clean.evt
Size (bytes)282,758,400315,175,680
Size269.7 MB 300.6 MB
Events in quadrant A1,419,3101,474,043
Events in quadrant B1,724,9222,125,753
Events in quadrant C1,745,3841,998,731
Events in quadrant D1,510,4881,787,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06380
B06380
C06380
D06380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01228270
B0669230
C0708970
D0721800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31410940129.929959%
B314103491.111111%
C314105191.652340%
D3141010393.307864%

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 34446 29681 0 0 0.00% 0.00%
B 34450 31404 0 0 0.00% 0.00%
C 34450 31406 0 0 0.00% 0.00%
D 34450 31353 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 14 188 1528 12.87 368 345 91.9
A 0 29 1375 11.2 368 345 91.9
A 14 204 1298 10.37 368 345 91.9
B 2 9 1395 10.57 455 434 90.9
B 2 8 1165 8.04 455 434 90.9
B 3 17 1146 7.83 455 434 90.9
C 12 241 1301 7.26 460 429 120.1
C 7 111 1207 6.48 460 429 120.1
C 12 250 1192 6.36 460 429 120.1
D 3 14 1180 6.7 431 392 117.6
D 6 231 1119 6.18 431 392 117.6
D 7 3 1085 5.89 431 392 117.6

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