ASTROSAT CZTI

Data Quality Report

Orbit 37210

Creation date: 2024-06-27T21:36:57.096644
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_079T01_9000005284_37210cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37210cztM0_level2_quad_clean.evt
Size (bytes)841,000,320130,890,240
Size802.0 MB 124.8 MB
Events in quadrant A5,710,451804,635
Events in quadrant B6,350,336815,598
Events in quadrant C5,824,722813,010
Events in quadrant D6,834,200763,184

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241284
B0261553
C0242963
D0280603

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110881321.190476%
B110881571.415945%
C11088380.342713%
D110884033.634560%

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 15235 11091 78 78 0.51% 0.70%
B 15235 11091 85 85 0.56% 0.77%
C 15235 11091 27 27 0.18% 0.24%
D 15235 11091 306 306 2.01% 2.76%

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 10 83 452619 1747.4 1274 1250 258.3
A 15 237 251750 969.77 1274 1250 258.3
A 9 143 45772 172.36 1274 1250 258.3
B 0 213 629594 2588.97 1266 1232 242.7
B 5 172 405266 1664.7 1266 1232 242.7
B 0 190 138976 567.53 1266 1232 242.7
C 15 214 471014 1607.05 1250 1261 292.3
C 0 207 209764 713.3 1250 1261 292.3
C 0 10 143643 487.1 1250 1261 292.3
D 2 249 875408 2901.3 1231 1201 301.3
D 13 249 526134 1742.14 1231 1201 301.3
D 12 233 319063 1054.91 1231 1201 301.3

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