ASTROSAT CZTI

Data Quality Report

Orbit 13377

Creation date: 2024-06-27T16:39:53.350755
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/AS1A04_103T01_9000001988_13377cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13377cztM0_level2_quad_clean.evt
Size (bytes)589,728,96098,202,240
Size562.4 MB 93.7 MB
Events in quadrant A3,298,307632,371
Events in quadrant B3,502,698646,620
Events in quadrant C3,521,830625,366
Events in quadrant D7,051,554570,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147782
B0151921
C0152161
D0260421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7162220.307177%
B7162530.740017%
C7162210.293214%
D716272810.164758%

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 7863 7164 6 6 0.08% 0.08%
B 7863 7164 0 0 0.00% 0.00%
C 7863 7164 7 7 0.09% 0.10%
D 7863 7164 565 565 7.19% 7.89%

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 9 143 44284 256.07 840 821 169.7
A 15 69 15631 87.26 840 821 169.7
A 0 226 7643 40.19 840 821 169.7
B 10 244 87754 537.9 850 827 161.6
B 3 64 42273 256.47 850 827 161.6
B 12 111 19181 113.57 850 827 161.6
C 14 220 235271 1228.8 821 826 190.8
C 3 233 70674 366.09 821 826 190.8
C 14 234 8219 38.75 821 826 190.8
D 1 52 3967369 21255.2 779 754 186.6
D 5 222 49016 258.61 779 754 186.6
D 2 136 41810 220.0 779 754 186.6

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