ASTROSAT CZTI

Data Quality Report

Orbit 20220217_A05_103T05_9000004938_level2

Creation date: 2022-02-21T12:52:49.845412
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_9000004938cztM0_level2_bc.evt modeM0/AS1A05_103T05_9000004938cztM0_level2_quad_clean.evt
Size (bytes)1,356,719,040338,492,160
Size1.3 GB 322.8 MB
Events in quadrant A5,333,9312,245,458
Events in quadrant B8,267,8582,196,731
Events in quadrant C6,146,6702,205,470
Events in quadrant D19,722,5771,970,097

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0870
C0870
D0870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493900
B0621270
C0499660
D0987120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23752890.374705%
B2375211814.972213%
C237521270.534692%
D23752272611.476928%

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 37816 23757 9 9 0.02% 0.04%
B 37815 23751 78 78 0.21% 0.33%
C 37815 23751 16 16 0.04% 0.07%
D 37815 23751 693 693 1.83% 2.92%

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 9 143 199628 714.05 1247 1228 277.8
A 10 83 139198 496.56 1247 1228 277.8
A 0 31 65798 232.39 1247 1228 277.8
B 5 172 2199276 9089.53 1219 1195 241.8
B 0 229 361499 1489.93 1219 1195 241.8
B 0 245 222305 914.34 1219 1195 241.8
C 15 214 942877 3368.02 1211 1205 279.6
C 0 10 260557 927.61 1211 1205 279.6
C 14 67 155846 553.09 1211 1205 279.6
D 8 195 8115850 27392.56 1153 1127 296.2
D 10 118 1068006 3601.42 1153 1127 296.2
D 7 38 915866 3087.85 1153 1127 296.2

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