ASTROSAT CZTI

Data Quality Report

Orbit 21509

Creation date: 2024-06-27T18:28:46.011446
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/AS1T03_141T01_9000003174_21509cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21509cztM0_level2_quad_clean.evt
Size (bytes)507,732,48081,619,200
Size484.2 MB 77.8 MB
Events in quadrant A3,460,185509,922
Events in quadrant B3,605,508523,711
Events in quadrant C3,535,443509,445
Events in quadrant D4,353,131493,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140720
B0145860
C0144330
D0170330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6235811.299118%
B62351171.876504%
C62351702.726544%
D62341532.454283%

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 7590 6236 0 0 0.00% 0.00%
B 7590 6236 3 3 0.04% 0.05%
C 7590 6236 0 0 0.00% 0.00%
D 7589 6235 38 38 0.50% 0.61%

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 10563 54.57 898 886 177.3
A 0 226 7719 38.53 898 886 177.3
A 3 137 6552 31.95 898 886 177.3
B 0 230 47952 289.48 892 874 162.6
B 3 64 22885 135.35 892 874 162.6
B 12 111 18742 109.87 892 874 162.6
C 14 238 139944 704.8 867 877 197.3
C 3 233 8767 39.99 867 877 197.3
C 13 61 6165 26.8 867 877 197.3
D 13 174 499752 2377.83 878 855 209.8
D 14 35 237457 1127.69 878 855 209.8
D 10 199 188083 892.36 878 855 209.8

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