ASTROSAT CZTI

Data Quality Report

Orbit 25998

Creation date: 2024-06-27T19:23:40.905954
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/AS1A07_068T01_9000003760_25998cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25998cztM0_level2_quad_clean.evt
Size (bytes)467,870,400100,857,600
Size446.2 MB 96.2 MB
Events in quadrant A3,129,825687,933
Events in quadrant B3,160,480678,602
Events in quadrant C3,064,212640,007
Events in quadrant D4,405,959627,205

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128980
B0130240
C0127990
D0171750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6026901.493528%
B60271001.659200%
C60271262.090592%
D60273065.077153%

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 7231 6027 5 5 0.07% 0.08%
B 7232 6028 2 2 0.03% 0.03%
C 7232 6028 0 0 0.00% 0.00%
D 7232 6028 199 199 2.75% 3.30%

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 4 208 12277 70.95 807 793 161.9
A 13 254 9755 55.37 807 793 161.9
A 0 226 7142 39.22 807 793 161.9
B 10 245 43262 284.7 783 763 149.3
B 0 190 32110 210.0 783 763 149.3
B 12 111 17201 110.12 783 763 149.3
C 14 238 124052 706.09 748 753 174.6
C 3 233 11765 63.06 748 753 174.6
C 0 207 9390 49.46 748 753 174.6
D 1 52 1294807 7191.48 757 741 179.9
D 7 80 161926 895.75 757 741 179.9
D 7 223 43077 235.27 757 741 179.9

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