ASTROSAT CZTI

Data Quality Report

Orbit 35328

Creation date: 2022-04-11T05:51:04.738349
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/AS1A11_046T08_9000005062_35328cztM0_level2.evt modeM0/AS1A11_046T08_9000005062_35328cztM0_level2_quad_clean.evt
Size (bytes)315,797,76027,020,160
Size301.2 MB 25.8 MB
Events in quadrant A3,538,820126,918
Events in quadrant B3,044,760158,233
Events in quadrant C1,396,386201,823
Events in quadrant D1,462,296199,548

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117561
B0102611
C052481
D055211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177598855.661972%
B177595954.028169%
C17751699.521127%
D17761287.207207%

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 1775 1775 1002 1002 56.45% 56.45%
B 1775 1775 823 823 46.37% 46.37%
C 1775 1775 155 155 8.73% 8.73%
D 1775 1775 112 112 6.31% 6.31%

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 15 169 2979071 106516.19 129 127 28.0
A 10 83 21660 769.94 129 127 28.0
A 9 143 16262 576.93 129 127 28.0
B 5 172 1202372 38424.12 154 149 31.3
B 5 236 1176285 37590.35 154 149 31.3
B 5 255 21528 683.29 154 149 31.3
C 0 10 551028 11958.18 192 192 46.1
C 15 214 72728 1574.69 192 192 46.1
C 10 49 7258 153.4 192 192 46.1
D 12 233 217598 4325.07 198 191 50.3
D 12 235 126249 2507.78 198 191 50.3
D 10 118 108478 2154.25 198 191 50.3

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