ASTROSAT CZTI

Data Quality Report

Orbit 13484

Creation date: 2024-06-27T16:41:30.056816
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/AS1A04_103T01_9000001988_13484cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13484cztM0_level2_quad_clean.evt
Size (bytes)482,598,720105,635,520
Size460.2 MB 100.7 MB
Events in quadrant A3,488,277672,404
Events in quadrant B3,601,405687,276
Events in quadrant C3,537,760673,340
Events in quadrant D3,476,348642,258

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153143
B0155122
C0154272
D0155912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7524580.770867%
B7524871.156300%
C7524811.076555%
D7524730.970229%

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 9030 7525 0 0 0.00% 0.00%
B 9030 7526 5 5 0.06% 0.07%
C 9030 7526 3 3 0.03% 0.04%
D 9030 7526 11 11 0.12% 0.15%

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 1 162 24664 129.21 897 877 184.1
A 0 226 7786 37.53 897 877 184.1
A 1 178 6767 31.99 897 877 184.1
B 4 142 27605 154.97 898 874 172.5
B 0 214 26376 147.85 898 874 172.5
B 3 64 25499 142.76 898 874 172.5
C 3 233 67598 325.7 882 888 204.8
C 0 207 32464 154.16 882 888 204.8
C 13 61 6291 26.38 882 888 204.8
D 8 195 65636 308.66 871 844 209.9
D 13 249 54882 257.43 871 844 209.9
D 2 234 28586 132.16 871 844 209.9

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