ASTROSAT CZTI

Data Quality Report

Orbit 29155

Creation date: 2024-06-27T20:00:54.219916
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/AS1A10_099T01_9000004184_29155cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29155cztM0_level2_quad_clean.evt
Size (bytes)592,030,080104,613,120
Size564.6 MB 99.8 MB
Events in quadrant A3,576,755688,400
Events in quadrant B3,793,773703,371
Events in quadrant C3,639,743663,643
Events in quadrant D6,440,884620,920

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151112
B0157492
C0151832
D0240012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70661081.528446%
B70661652.335126%
C70651552.193914%
D70656759.554140%

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 9326 7068 0 0 0.00% 0.00%
B 9326 7068 3 3 0.03% 0.04%
C 9325 7067 0 0 0.00% 0.00%
D 9325 7067 529 529 5.67% 7.49%

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 13345 67.38 925 907 184.6
A 3 137 9136 44.58 925 907 184.6
A 0 226 7979 38.31 925 907 184.6
B 0 190 58639 326.58 920 898 176.8
B 0 183 32234 177.24 920 898 176.8
B 0 189 26939 147.29 920 898 176.8
C 14 238 144148 694.7 884 891 206.2
C 3 233 28824 135.45 884 891 206.2
C 2 114 17003 78.13 884 891 206.2
D 1 52 2344814 11418.5 857 836 205.3
D 8 195 700471 3408.22 857 836 205.3
D 10 33 112637 544.63 857 836 205.3

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