ASTROSAT CZTI

Data Quality Report

Orbit 19983

Creation date: 2024-06-27T18:09:31.110221
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_082T09_9000002978_19983cztM0_level2.evt modeM0/AS1A05_082T09_9000002978_19983cztM0_level2_quad_clean.evt
Size (bytes)1,866,277,440194,181,120
Size1.7 GB 185.2 MB
Events in quadrant A28,912,877729,194
Events in quadrant B8,328,0721,370,883
Events in quadrant C8,733,5321,307,141
Events in quadrant D9,386,7271,285,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0974153
B0355513
C0365213
D0395293

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17191976956.826246%
B171922391.390181%
C171922941.710098%
D171923361.954397%

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 18625 17190 8609 8609 46.22% 50.08%
B 18627 17192 12 12 0.06% 0.07%
C 18627 17192 24 24 0.13% 0.14%
D 18627 17192 195 195 1.05% 1.13%

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 14 238 23627549 93711.43 1254 1228 252.1
A 14 254 392555 1552.16 1254 1228 252.1
A 10 253 38144 146.42 1254 1228 252.1
B 7 220 50556 122.53 2070 2013 396.2
B 12 111 49682 120.32 2070 2013 396.2
B 11 111 43591 104.95 2070 2013 396.2
C 3 233 355182 754.96 1994 2009 467.8
C 14 238 309323 656.93 1994 2009 467.8
C 9 221 233231 494.27 1994 2009 467.8
D 1 52 1402048 2845.22 2020 1959 492.1
D 12 218 192517 387.25 2020 1959 492.1
D 2 234 71170 140.65 2020 1959 492.1

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