ASTROSAT CZTI

Data Quality Report

Orbit 22643

Creation date: 2024-06-27T18:43:59.645357
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/AS1A08_007T01_9000003362_22643cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22643cztM0_level2_quad_clean.evt
Size (bytes)510,292,800106,548,480
Size486.7 MB 101.6 MB
Events in quadrant A3,709,110685,148
Events in quadrant B3,919,146693,092
Events in quadrant C3,599,555664,070
Events in quadrant D3,709,544655,169

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159982
B0166532
C0156492
D0162933

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7604430.565492%
B76041101.446607%
C76041101.446607%
D7603610.802315%

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 7814 7606 0 0 0.00% 0.00%
B 7814 7606 4 4 0.05% 0.05%
C 7814 7606 0 0 0.00% 0.00%
D 7813 7605 14 14 0.18% 0.18%

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 11 47 173924 928.51 913 891 186.4
A 13 254 13981 70.24 913 891 186.4
A 0 226 7896 37.59 913 891 186.4
B 0 190 81420 463.95 915 894 173.6
B 0 229 78314 446.06 915 894 173.6
B 0 219 71171 404.9 915 894 173.6
C 14 238 139564 677.52 877 882 204.7
C 8 128 10252 45.78 877 882 204.7
C 2 16 9473 41.97 877 882 204.7
D 15 0 153371 710.4 888 860 214.7
D 12 233 60003 275.49 888 860 214.7
D 1 52 45304 207.02 888 860 214.7

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