ASTROSAT CZTI

Data Quality Report

Orbit 21561

Creation date: 2024-06-27T18:29:31.721700
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/AS1A06_009T05_9000003196_21561cztM0_level2.evt modeM0/AS1A06_009T05_9000003196_21561cztM0_level2_quad_clean.evt
Size (bytes)628,824,96096,762,240
Size599.7 MB 92.3 MB
Events in quadrant A3,405,925630,425
Events in quadrant B3,673,449640,921
Events in quadrant C3,353,960615,145
Events in quadrant D8,124,411543,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148262
B0154252
C0145612
D0289562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7172660.920245%
B7172590.822644%
C7172630.878416%
D7172120016.731735%

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 8707 7174 21 21 0.24% 0.29%
B 8707 7174 16 16 0.18% 0.22%
C 8707 7174 0 0 0.00% 0.00%
D 8707 7174 1231 1231 14.14% 17.16%

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 15 174 81448 467.63 859 841 172.4
A 13 254 11454 61.57 859 841 172.4
A 12 96 9219 48.6 859 841 172.4
B 0 228 158161 957.1 863 842 164.4
B 0 230 92073 555.03 863 842 164.4
B 0 190 24431 143.51 863 842 164.4
C 14 238 129338 661.15 823 827 194.4
C 3 233 14732 71.54 823 827 194.4
C 13 61 5815 25.66 823 827 194.4
D 1 52 3751825 19806.13 783 760 189.4
D 2 136 733172 3867.23 783 760 189.4
D 13 153 154243 810.41 783 760 189.4

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