ASTROSAT CZTI

Data Quality Report

Orbit 21716

Creation date: 2024-06-27T18:31:22.504967
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_039T01_9000003216_21716cztM0_level2.evt modeM0/AS1A07_039T01_9000003216_21716cztM0_level2_quad_clean.evt
Size (bytes)494,225,280127,186,560
Size471.3 MB 121.3 MB
Events in quadrant A3,103,732846,932
Events in quadrant B3,565,929865,536
Events in quadrant C4,306,384839,126
Events in quadrant D3,527,284824,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139611
B0150851
C0172361
D0151501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68381261.842644%
B68391922.807428%
C68392503.655505%
D68391782.602720%

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 7138 6839 0 0 0.00% 0.00%
B 7139 6840 32 32 0.45% 0.47%
C 7139 6840 10 10 0.14% 0.15%
D 7139 6840 42 42 0.59% 0.61%

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 11694 67.2 802 783 162.4
A 0 226 6937 37.9 802 783 162.4
A 3 137 6625 35.98 802 783 162.4
B 3 64 238632 1555.39 799 776 152.9
B 6 36 91423 592.76 799 776 152.9
B 0 189 29786 189.7 799 776 152.9
C 8 208 1138654 6268.02 779 782 181.5
C 14 238 122174 668.69 779 782 181.5
C 13 61 5297 24.87 779 782 181.5
D 13 153 238157 1250.72 788 765 189.8
D 1 52 107207 560.8 788 765 189.8
D 7 238 59340 308.61 788 765 189.8

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