ASTROSAT CZTI

Data Quality Report

Orbit 24604

Creation date: 2024-06-27T19:07:48.217020
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_189T01_9000003614_24604cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24604cztM0_level2_quad_clean.evt
Size (bytes)529,001,28068,169,600
Size504.5 MB 65.0 MB
Events in quadrant A3,289,601414,577
Events in quadrant B3,476,124418,414
Events in quadrant C4,670,183394,465
Events in quadrant D4,152,494391,215

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137493
B0143312
C0181322
D0166192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6381731.144021%
B63811061.661182%
C63812924.576085%
D6381641.002978%

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 7511 6382 0 0 0.00% 0.00%
B 7511 6381 16 16 0.21% 0.25%
C 7511 6382 140 140 1.86% 2.19%
D 7511 6381 5 5 0.07% 0.08%

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 9321 50.15 853 834 169.2
A 3 137 7612 40.05 853 834 169.2
A 0 226 7350 38.5 853 834 169.2
B 3 64 180843 1132.64 838 817 158.9
B 12 111 19675 118.65 838 817 158.9
B 11 111 17821 106.98 838 817 158.9
C 7 247 1398090 7565.49 796 804 184.7
C 14 238 126846 682.44 796 804 184.7
C 0 239 20813 108.34 796 804 184.7
D 13 104 877256 4418.06 818 793 198.4
D 1 52 90362 451.5 818 793 198.4
D 8 195 59337 295.11 818 793 198.4

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