ASTROSAT CZTI

Data Quality Report

Orbit 20190307_A05_075T05_9000002764_level2

Creation date: 2019-03-28T12:03:10.299396
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_075T05_9000002764cztM0_level2_bc.evt modeM0/AS1A05_075T05_9000002764cztM0_level2_quad_clean.evt
Size (bytes)927,089,280305,510,400
Size884.1 MB 291.4 MB
Events in quadrant A5,725,6811,895,484
Events in quadrant B5,166,4181,945,688
Events in quadrant C6,922,3671,793,810
Events in quadrant D8,496,4371,841,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0549810
B0527340
C0646900
D0632240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05240
B05240
C05240
D05240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A258204121.595662%
B258201740.673896%
C2582020047.761425%
D258205822.254067%

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 29328 25819 88 88 0.30% 0.34%
B 29328 25819 0 0 0.00% 0.00%
C 29329 25820 29 29 0.10% 0.11%
D 29328 25819 68 68 0.23% 0.26%

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 13 775959 2759.08 1269 1242 280.8
A 13 254 38907 134.14 1269 1242 280.8
A 9 143 14245 46.31 1269 1242 280.8
B 0 229 65887 260.52 1291 1257 248.1
B 4 216 38090 148.47 1291 1257 248.1
B 0 190 28655 110.44 1291 1257 248.1
C 4 254 1876125 6678.23 1185 1174 280.8
C 3 233 441375 1567.92 1185 1174 280.8
C 9 54 19770 66.24 1185 1174 280.8
D 1 52 1329698 4540.49 1255 1209 292.6
D 7 238 992625 3388.45 1255 1209 292.6
D 5 222 892054 3044.72 1255 1209 292.6

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