ASTROSAT CZTI

Data Quality Report

Orbit 20160913_G05_152T02_9000000658_level2

Creation date: 2025-11-06T12:10:45.780453
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/AS1G05_152T02_9000000658cztM0_level2.fits modeM0/AS1G05_152T02_9000000658cztM0_level2_quad_clean.evt
Size (bytes)180,469,440208,442,880
Size172.1 MB 198.8 MB
Events in quadrant A1,059,8181,266,546
Events in quadrant B1,037,7661,276,412
Events in quadrant C1,050,0041,228,448
Events in quadrant D912,8361,137,676

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422810
B0418980
C0414280
D0428330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139927986231336139925739536430
B1139927986231336139925739536430
C1139927986231336139925739536430
D1139927986231336139925739536430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04540
B04480
C04590
D04260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202833271.612188%
B202872951.454133%
C202542091.031895%
D202543181.570060%

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 28090 21152 0 0 0.00% 0.00%
B 28090 21137 0 0 0.00% 0.00%
C 28088 21110 0 0 0.00% 0.00%
D 28090 21121 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 14 188 994 10.16 274 254 72.8
A 0 29 964 9.75 274 254 72.8
A 14 204 924 9.2 274 254 72.8
B 2 9 879 10.57 272 257 58.9
B 14 254 760 8.55 272 257 58.9
B 3 17 723 7.92 272 257 58.9
C 12 241 789 7.03 276 254 76.1
C 2 191 765 6.72 276 254 76.1
C 7 111 746 6.47 276 254 76.1
D 11 82 730 7.03 259 235 70.5
D 6 231 711 6.76 259 235 70.5
D 3 14 695 6.53 259 235 70.5

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