ASTROSAT CZTI

Data Quality Report

Orbit 10331

Creation date: 2024-06-27T15:57:59.475181
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/AS1A03_112T01_9000001488_10331cztM0_level2.evt modeM0/AS1A03_112T01_9000001488_10331cztM0_level2_quad_clean.evt
Size (bytes)1,191,718,080222,560,640
Size1.1 GB 212.3 MB
Events in quadrant A8,395,6281,348,860
Events in quadrant B8,945,4301,381,021
Events in quadrant C7,733,6731,401,156
Events in quadrant D9,839,9101,411,995

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05015
B05520
C05520
D05318

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0562189
B0562190
C0562196
D0549178

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06379127193
B06198623933
C05569420537
D06179420316

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167131130.676120%
B169752431.431517%
C17399530.304615%
D183241841.004148%

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 22283 18011 20 20 0.09% 0.11%
B 22283 18288 106 106 0.48% 0.58%
C 22282 18588 0 0 0.00% 0.00%
D 22283 18609 121 121 0.54% 0.65%

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 8 15 505101 1301.26 1917 1874 386.7
A 13 251 407227 1048.17 1917 1874 386.7
A 3 1 43597 107.89 1917 1874 386.7
B 4 239 849654 2282.77 1962 1910 371.4
B 11 51 181975 484.87 1962 1910 371.4
B 0 219 97955 258.63 1962 1910 371.4
C 13 61 14689 27.72 1980 1987 458.2
C 14 234 11879 21.59 1980 1987 458.2
C 3 202 4981 6.53 1980 1987 458.2
D 2 33 606288 1234.14 2064 2009 489.6
D 8 195 509303 1036.06 2064 2009 489.6
D 1 52 329719 669.29 2064 2009 489.6

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