ASTROSAT CZTI

Data Quality Report

Orbit 26457

Creation date: 2024-06-27T19:29:13.948398
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/AS1A09_056T01_9000003824_26457cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26457cztM0_level2_quad_clean.evt
Size (bytes)670,204,80098,199,360
Size639.2 MB 93.7 MB
Events in quadrant A3,130,429743,557
Events in quadrant B3,002,834752,774
Events in quadrant C3,192,448711,271
Events in quadrant D10,570,960351,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132130
B0127920
C0133170
D0353640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5911911.539503%
B5912360.608931%
C5912801.353180%
D5911327555.405177%

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 7081 5912 44 44 0.62% 0.74%
B 7082 5913 1 1 0.01% 0.02%
C 7082 5913 0 0 0.00% 0.00%
D 7081 5912 3194 3194 45.11% 54.03%

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 6 16 190675 1254.2 758 744 151.4
A 12 189 13751 85.89 758 744 151.4
A 13 254 8789 53.12 758 744 151.4
B 0 190 66947 472.3 750 732 140.2
B 12 111 16759 114.32 750 732 140.2
B 11 111 14838 100.62 750 732 140.2
C 3 233 223305 1317.69 726 729 168.9
C 14 238 117651 692.2 726 729 168.9
C 14 176 9082 49.45 726 729 168.9
D 1 52 8775507 81510.79 453 443 107.7
D 13 168 24214 220.81 453 443 107.7
D 11 176 21060 191.51 453 443 107.7

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