ASTROSAT CZTI

Data Quality Report

Orbit 18356

Creation date: 2024-06-27T17:48:46.892312
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/AS1A06_006T01_9000002720_18356cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18356cztM0_level2_quad_clean.evt
Size (bytes)534,813,12084,769,920
Size510.0 MB 80.8 MB
Events in quadrant A3,359,404534,175
Events in quadrant B4,102,910528,864
Events in quadrant C3,955,016523,158
Events in quadrant D4,320,251508,831

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140722
B0161553
C0158652
D0171852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6772981.447135%
B67712433.588835%
C67712583.810368%
D67711572.318712%

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 7677 6773 3 3 0.04% 0.04%
B 7676 6772 110 110 1.43% 1.62%
C 7676 6772 66 66 0.86% 0.97%
D 7676 6772 88 88 1.15% 1.30%

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 6 16 26623 147.45 861 843 174.8
A 4 2 15308 82.73 861 843 174.8
A 0 226 7416 37.59 861 843 174.8
B 3 64 460607 2807.03 855 835 163.8
B 7 220 209109 1271.57 855 835 163.8
B 0 189 28194 167.03 855 835 163.8
C 4 254 597731 3128.04 820 826 190.8
C 14 238 127262 662.58 820 826 190.8
C 0 207 20100 101.0 820 826 190.8
D 14 34 820058 4001.33 835 810 204.7
D 1 52 228050 1109.87 835 810 204.7
D 7 96 54348 261.49 835 810 204.7

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