ASTROSAT CZTI

Data Quality Report

Orbit 19717

Creation date: 2024-06-27T18:05:57.440973
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_013T01_9000002944_19717cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19717cztM0_level2_quad_clean.evt
Size (bytes)511,689,60079,153,920
Size488.0 MB 75.5 MB
Events in quadrant A3,445,149485,133
Events in quadrant B3,556,359493,680
Events in quadrant C3,792,826469,727
Events in quadrant D4,223,184456,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148042
B0149833
C0154632
D0173452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70501391.971631%
B70491492.113775%
C70502042.893617%
D70503915.546099%

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 8945 7052 0 0 0.00% 0.00%
B 8944 7050 1 1 0.01% 0.01%
C 8945 7050 8 8 0.09% 0.11%
D 8945 7051 237 237 2.65% 3.36%

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 23 48684 268.21 879 859 178.3
A 0 226 10613 54.7 879 859 178.3
A 6 16 10415 53.59 879 859 178.3
B 4 171 28079 161.72 882 861 168.3
B 0 190 23098 132.13 882 861 168.3
B 12 111 20340 115.74 882 861 168.3
C 3 233 232015 1172.2 850 857 197.2
C 14 238 132561 667.87 850 857 197.2
C 7 247 111247 559.79 850 857 197.2
D 1 52 935080 4546.38 839 814 205.5
D 2 16 36280 172.59 839 814 205.5
D 12 225 33527 159.19 839 814 205.5

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