ASTROSAT CZTI

Data Quality Report

Orbit 10812

Creation date: 2024-06-27T16:04:44.463816
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/AS1G07_053T01_9000001566_10812cztM0_level2.evt modeM0/AS1G07_053T01_9000001566_10812cztM0_level2_quad_clean.evt
Size (bytes)631,221,12076,337,280
Size602.0 MB 72.8 MB
Events in quadrant A6,043,426426,556
Events in quadrant B4,586,470516,614
Events in quadrant C2,710,903514,839
Events in quadrant D5,393,488457,435

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217642
B0173881
C0119151
D0198341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5656133123.532532%
B56564467.885431%
C5656671.184583%
D565664211.350778%

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 6916 5657 828 828 11.97% 14.64%
B 6916 5657 284 284 4.11% 5.02%
C 6916 5657 11 11 0.16% 0.19%
D 6916 5657 595 595 8.60% 10.52%

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 8 5 3601588 28575.92 610 600 126.0
A 4 2 50505 396.02 610 600 126.0
A 15 174 20434 157.39 610 600 126.0
B 4 239 1172215 8895.31 694 680 131.7
B 15 204 560759 4252.61 694 680 131.7
B 0 219 85368 643.02 694 680 131.7
C 14 234 68539 437.64 674 679 155.1
C 0 207 10646 64.28 674 679 155.1
C 13 61 5118 28.63 674 679 155.1
D 13 138 974453 6196.42 650 635 157.2
D 4 95 531907 3380.49 650 635 157.2
D 10 199 409845 2603.81 650 635 157.2

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