ASTROSAT CZTI

Data Quality Report

Orbit 43955

Creation date: 2024-06-27T22:57:38.117454
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/AS1A13_025T01_9000005920_43955cztM0_level2.fits modeM0/AS1A13_025T01_9000005920_43955cztM0_level2_quad_clean.evt
Size (bytes)511,136,640112,363,200
Size487.5 MB 107.2 MB
Events in quadrant A6,908,551713,791
Events in quadrant B3,714,076763,832
Events in quadrant C3,443,657758,244
Events in quadrant D4,307,250676,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255862
B0158362
C0153352
D0178362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70436599.356808%
B70433074.358938%
C70431131.604430%
D70442924.145372%

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 8768 7045 302 302 3.44% 4.29%
B 8768 7043 48 48 0.55% 0.68%
C 8768 7045 29 29 0.33% 0.41%
D 8769 7046 155 155 1.77% 2.20%

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 15 222 1426517 8564.86 795 775 166.5
A 10 83 1237632 7430.17 795 775 166.5
A 14 238 1129332 6779.58 795 775 166.5
B 5 172 247158 1522.98 809 781 161.8
B 0 200 87588 536.6 809 781 161.8
B 5 235 49149 298.99 809 781 161.8
C 1 241 140535 738.66 801 806 189.2
C 15 157 94802 496.9 801 806 189.2
C 14 254 55549 289.39 801 806 189.2
D 5 235 235991 1183.3 789 765 198.8
D 2 120 192614 965.09 789 765 198.8
D 12 17 192602 965.03 789 765 198.8

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