ASTROSAT CZTI

Data Quality Report

Orbit 31738

Creation date: 2024-06-27T20:32:07.669997
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/AS1T04_034T01_9000004632_31738cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31738cztM0_level2_quad_clean.evt
Size (bytes)906,099,840117,662,400
Size864.1 MB 112.2 MB
Events in quadrant A5,806,230744,272
Events in quadrant B9,490,875741,942
Events in quadrant C5,220,938726,824
Events in quadrant D6,309,469718,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227572
B0344714
C0209272
D0248462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90944955.443149%
B9093131714.483669%
C90943073.375852%
D90941101.209589%

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 10594 9095 310 310 2.93% 3.41%
B 10593 9094 749 749 7.07% 8.24%
C 10594 9095 104 104 0.98% 1.14%
D 10594 9095 33 33 0.31% 0.36%

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 13 1518333 6779.14 1110 1086 223.8
A 13 254 15807 65.77 1110 1086 223.8
A 3 137 11579 46.88 1110 1086 223.8
B 5 255 2477667 11975.86 1065 1036 206.8
B 6 159 2326536 11245.06 1065 1036 206.8
B 4 80 371992 1793.77 1065 1036 206.8
C 0 10 692744 2742.1 1074 1082 252.2
C 14 238 172720 680.46 1074 1082 252.2
C 3 233 53798 208.99 1074 1082 252.2
D 8 195 1927711 7322.41 1095 1064 263.1
D 12 233 205085 775.4 1095 1064 263.1
D 2 234 38901 143.8 1095 1064 263.1

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