ASTROSAT CZTI

Data Quality Report

Orbit 06917

Creation date: 2024-06-27T15:13:04.684815
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/AS1A02_005T01_9000000948_06917cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06917cztM0_level2_quad_clean.evt
Size (bytes)485,864,64078,148,800
Size463.4 MB 74.5 MB
Events in quadrant A3,316,351480,691
Events in quadrant B3,486,154487,986
Events in quadrant C3,199,763479,874
Events in quadrant D4,267,216460,773

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139683
B0143262
C0136412
D0169152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65521141.739927%
B65521021.556777%
C6552821.251526%
D65522583.937729%

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 7797 6553 17 17 0.22% 0.26%
B 7797 6553 3 3 0.04% 0.05%
C 7797 6553 0 0 0.00% 0.00%
D 7797 6553 162 162 2.08% 2.47%

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 0 128 47034 271.65 846 832 170.1
A 0 226 8297 43.89 846 832 170.1
A 12 194 7811 41.03 846 832 170.1
B 0 228 143419 902.23 841 825 158.0
B 0 214 22950 139.99 841 825 158.0
B 0 219 17093 102.93 841 825 158.0
C 9 247 19032 97.56 813 818 186.7
C 13 61 6602 30.98 813 818 186.7
C 10 22 3028 11.84 813 818 186.7
D 1 20 915823 4602.6 817 793 198.8
D 2 152 80410 400.47 817 793 198.8
D 2 136 67049 333.27 817 793 198.8

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