ASTROSAT CZTI

Data Quality Report

Orbit 23812

Creation date: 2024-06-27T18:59:00.709542
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/AS1A07_113T01_9000003526_23812cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23812cztM0_level2_quad_clean.evt
Size (bytes)576,570,240100,915,200
Size549.9 MB 96.2 MB
Events in quadrant A3,272,010655,090
Events in quadrant B3,434,518676,442
Events in quadrant C3,474,575664,684
Events in quadrant D6,854,336620,686

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136752
B0141112
C0142592
D0248792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293641.017003%
B62931041.652630%
C62931622.574289%
D629282313.080102%

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 7593 6293 0 0 0.00% 0.00%
B 7593 6293 14 14 0.18% 0.22%
C 7593 6293 11 11 0.14% 0.17%
D 7592 6293 519 519 6.84% 8.25%

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 13 254 10891 59.76 848 833 168.3
A 3 137 7180 37.71 848 833 168.3
A 0 226 7147 37.52 848 833 168.3
B 3 64 98484 607.33 851 832 160.8
B 12 111 18704 111.15 851 832 160.8
B 11 111 16836 99.53 851 832 160.8
C 14 238 133842 689.98 834 843 192.8
C 0 10 71497 366.54 834 843 192.8
C 7 247 7745 35.81 834 843 192.8
D 8 195 1613914 8195.45 813 792 196.8
D 13 174 919675 4668.38 813 792 196.8
D 1 52 714692 3626.96 813 792 196.8

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