ASTROSAT CZTI

Data Quality Report

Orbit 34701

Creation date: 2022-07-18T19:34:38.927530
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/AS1A07_138T08_9000004970_34701cztM0_level2.evt modeM0/AS1A07_138T08_9000004970_34701cztM0_level2_quad_clean.evt
Size (bytes)365,569,92043,202,880
Size348.6 MB 41.2 MB
Events in quadrant A1,949,485260,244
Events in quadrant B2,212,777262,283
Events in quadrant C1,991,480260,857
Events in quadrant D4,645,572242,215

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082941
B091091
C082221
D0165811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3999110.275069%
B3999491.225306%
C399980.200050%
D39993408.502126%

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 3999 3999 7 7 0.18% 0.18%
B 3999 3999 34 34 0.85% 0.85%
C 3999 3999 6 6 0.15% 0.15%
D 3999 3999 304 304 7.60% 7.60%

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 7 48 41874 439.33 461 452 94.3
A 15 174 39044 409.32 461 452 94.3
A 9 143 28405 296.48 461 452 94.3
B 5 172 124783 1432.29 455 444 86.8
B 4 171 84831 972.07 455 444 86.8
B 5 255 62798 718.27 455 444 86.8
C 15 214 171913 1642.81 447 449 104.4
C 0 10 56313 535.24 447 449 104.4
C 14 67 11345 104.4 447 449 104.4
D 8 195 1531502 14029.6 439 425 109.1
D 1 52 624317 5716.86 439 425 109.1
D 2 250 288266 2637.55 439 425 109.1

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