ASTROSAT CZTI

Data Quality Report

Orbit 37454

Creation date: 2024-06-27T21:40:11.465958
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/AS1A09_002T01_9000005322_37454cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37454cztM0_level2_quad_clean.evt
Size (bytes)555,834,24084,346,560
Size530.1 MB 80.4 MB
Events in quadrant A3,148,571538,785
Events in quadrant B4,018,155536,764
Events in quadrant C3,010,232556,866
Events in quadrant D6,254,468506,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129973
B0158702
C0125953
D0226942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5945300.504626%
B59452614.390244%
C5944400.672948%
D59454357.317073%

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 7259 5945 23 23 0.32% 0.39%
B 7259 5946 152 152 2.09% 2.56%
C 7259 5946 37 37 0.51% 0.62%
D 7259 5946 420 420 5.79% 7.06%

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 10 83 304570 2227.67 671 657 136.4
A 13 248 135537 988.66 671 657 136.4
A 12 189 38281 275.78 671 657 136.4
B 4 171 991643 7871.21 658 640 125.9
B 0 189 180443 1428.12 658 640 125.9
B 4 232 71191 560.36 658 640 125.9
C 15 214 252194 1643.41 657 661 153.1
C 0 10 101020 655.7 657 661 153.1
C 14 254 93361 605.66 657 661 153.1
D 12 227 2106042 13472.46 641 623 156.3
D 2 249 457939 2926.34 641 623 156.3
D 13 249 404969 2587.39 641 623 156.3

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