ASTROSAT CZTI

Data Quality Report

Orbit 18261

Creation date: 2024-06-27T17:47:32.003550
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_019T01_9000002718_18261cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18261cztM0_level2_quad_clean.evt
Size (bytes)453,585,60086,414,400
Size432.6 MB 82.4 MB
Events in quadrant A3,234,208545,101
Events in quadrant B3,335,803551,163
Events in quadrant C3,262,682519,904
Events in quadrant D3,430,518515,225

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142342
B0144052
C0141312
D0150782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6967190.272714%
B6967320.459308%
C6967430.617195%
D6967380.545428%

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 7867 6968 2 2 0.03% 0.03%
B 7867 6968 1 1 0.01% 0.01%
C 7867 6968 0 0 0.00% 0.00%
D 7867 6968 28 28 0.36% 0.40%

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 2 36720 215.2 827 807 166.9
A 15 174 16860 96.19 827 807 166.9
A 0 226 7160 38.07 827 807 166.9
B 7 220 42849 262.17 829 809 160.4
B 0 197 24227 146.04 829 809 160.4
B 0 189 19374 115.78 829 809 160.4
C 14 238 122216 646.89 795 801 187.7
C 3 233 13263 66.4 795 801 187.7
C 8 128 12344 61.5 795 801 187.7
D 1 52 267514 1358.79 804 778 196.3
D 2 152 62053 312.14 804 778 196.3
D 7 96 30137 149.56 804 778 196.3

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