ASTROSAT CZTI

Data Quality Report

Orbit 24538

Creation date: 2024-06-27T19:07:03.487186
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_183T01_9000003606_24538cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24538cztM0_level2_quad_clean.evt
Size (bytes)533,113,920133,744,320
Size508.4 MB 127.5 MB
Events in quadrant A3,504,954908,612
Events in quadrant B4,420,262903,972
Events in quadrant C3,486,247870,032
Events in quadrant D4,222,677844,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154952
B0180462
C0153632
D0178232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7525280.372093%
B75263254.318363%
C7526660.876960%
D75261852.458145%

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 8970 7527 0 0 0.00% 0.00%
B 8971 7528 183 183 2.04% 2.43%
C 8971 7528 0 0 0.00% 0.00%
D 8971 7528 126 126 1.40% 1.67%

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 14 111 28633 154.6 894 875 179.5
A 4 2 17781 94.16 894 875 179.5
A 13 254 11970 61.79 894 875 179.5
B 3 64 937202 5640.32 881 860 166.0
B 12 111 20354 117.43 881 860 166.0
B 11 111 17642 101.09 881 860 166.0
C 14 238 138386 697.9 855 861 197.1
C 3 233 7364 33.0 855 861 197.1
C 13 61 6002 26.09 855 861 197.1
D 9 1 358836 1699.71 856 829 210.6
D 12 218 281026 1330.29 856 829 210.6
D 8 195 174818 826.05 856 829 210.6

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