ASTROSAT CZTI

Data Quality Report

Orbit 20393

Creation date: 2024-06-27T18:14:49.856128
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/AS1A05_198T01_9000003014_20393cztM0_level2.evt modeM0/AS1A05_198T01_9000003014_20393cztM0_level2_quad_clean.evt
Size (bytes)577,589,760108,492,480
Size550.8 MB 103.5 MB
Events in quadrant A3,320,042735,450
Events in quadrant B3,335,317758,027
Events in quadrant C3,332,028728,545
Events in quadrant D7,087,628633,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137522
B0138512
C0138472
D0252112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6156460.747238%
B6156610.990903%
C6156801.299545%
D6156143123.245614%

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 7491 6157 22 22 0.29% 0.36%
B 7491 6157 6 6 0.08% 0.10%
C 7491 6157 2 2 0.03% 0.03%
D 7491 6156 1228 1228 16.39% 19.95%

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 12 96 149870 911.82 822 807 163.5
A 0 226 7149 38.79 822 807 163.5
A 11 29 6655 35.77 822 807 163.5
B 7 220 45284 290.17 829 811 153.3
B 12 111 18057 112.53 829 811 153.3
B 11 111 15955 98.81 829 811 153.3
C 14 238 126768 670.28 810 820 187.9
C 9 221 39169 204.09 810 820 187.9
C 13 61 5570 25.28 810 820 187.9
D 1 52 4198719 23697.45 734 716 177.1
D 13 153 70657 394.81 734 716 177.1
D 2 234 23423 128.18 734 716 177.1

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