ASTROSAT CZTI

Data Quality Report

Orbit 20180512_A04_229T01_9000002096_level2

Creation date: 2018-05-19T16:53:43.445365
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/AS1A04_229T01_9000002096cztM0_level2_bc.evt modeM0/AS1A04_229T01_9000002096cztM0_level2_quad_clean.evt
Size (bytes)3,583,578,2401,291,320,000
Size3.3 GB 1.2 GB
Events in quadrant A21,369,9528,211,513
Events in quadrant B25,262,4168,554,965
Events in quadrant C22,954,4307,948,261
Events in quadrant D32,182,8287,595,686

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02072900
B02202900
C02083330
D02395520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020200
B020200
C020200
D020200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A992829170.923632%
B9928218271.840213%
C992828010.806793%
D9928215191.529985%

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 112744 99282 8 8 0.01% 0.01%
B 112744 99284 97 97 0.09% 0.10%
C 112744 99283 32 32 0.03% 0.03%
D 112744 99284 292 292 0.26% 0.29%

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 12 189 481798 417.5 5296 5202 1141.6
A 8 15 129061 108.5 5296 5202 1141.6
A 12 96 109597 91.45 5296 5202 1141.6
B 0 219 1146808 1110.87 5394 5226 1027.6
B 0 85 909940 880.38 5394 5226 1027.6
B 10 252 522983 503.83 5394 5226 1027.6
C 3 233 2399551 2139.22 5110 5058 1119.3
C 0 207 447673 395.43 5110 5058 1119.3
C 14 234 64574 53.17 5110 5058 1119.3
D 8 195 5254780 4499.2 5081 4942 1166.8
D 10 157 1527323 1304.7 5081 4942 1166.8
D 7 254 1170295 998.73 5081 4942 1166.8

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