ASTROSAT CZTI

Data Quality Report

Orbit 31086

Creation date: 2024-06-27T20:23:11.172378
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/AS1A10_109T01_9000004492_31086cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31086cztM0_level2_quad_clean.evt
Size (bytes)1,473,255,360239,843,520
Size1.4 GB 228.7 MB
Events in quadrant A8,767,3181,535,485
Events in quadrant B14,271,4371,525,384
Events in quadrant C9,730,6501,476,218
Events in quadrant D10,594,9561,446,223

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377303
B0560604
C0404533
D0429433

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185961360.731340%
B185962681.441170%
C185963311.779953%
D185962041.097010%

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 20287 18600 0 0 0.00% 0.00%
B 20287 18600 5 5 0.02% 0.03%
C 20287 18600 36 36 0.18% 0.19%
D 20287 18600 116 116 0.57% 0.62%

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 32031 65.91 2271 2226 452.2
A 3 137 23792 47.69 2271 2226 452.2
A 0 226 18640 36.3 2271 2226 452.2
B 6 159 5182922 12068.65 2236 2176 429.3
B 0 183 168732 388.0 2236 2176 429.3
B 12 111 55122 123.34 2236 2176 429.3
C 0 10 560823 1097.73 2173 2188 508.9
C 14 238 348660 680.82 2173 2188 508.9
C 10 22 283706 553.19 2173 2188 508.9
D 13 174 1240119 2383.69 2186 2130 519.4
D 8 195 993329 1908.51 2186 2130 519.4
D 2 234 78107 146.29 2186 2130 519.4

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