ASTROSAT CZTI

Data Quality Report

Orbit 26852

Creation date: 2024-06-27T19:33:40.587395
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/AS1T03_224T01_9000003868_26852cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26852cztM0_level2_quad_clean.evt
Size (bytes)532,774,08072,527,040
Size508.1 MB 69.2 MB
Events in quadrant A4,086,316438,769
Events in quadrant B3,562,386454,680
Events in quadrant C3,435,117441,968
Events in quadrant D4,629,041425,696

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162460
B0142040
C0138600
D0176890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225811.301205%
B62251091.751004%
C62251241.991968%
D62253445.526104%

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 7555 6226 15 15 0.20% 0.24%
B 7555 6226 21 21 0.28% 0.34%
C 7555 6226 0 0 0.00% 0.00%
D 7555 6226 297 297 3.93% 4.77%

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 0 13 751926 4409.37 864 851 170.3
A 13 254 9315 49.69 864 851 170.3
A 3 137 7367 38.25 864 851 170.3
B 10 246 84111 517.96 865 845 160.8
B 15 33 59410 364.31 865 845 160.8
B 12 111 18902 112.32 865 845 160.8
C 14 238 138636 711.79 845 854 193.6
C 13 61 5809 25.6 845 854 193.6
C 7 87 2344 7.7 845 854 193.6
D 1 52 1006659 5192.18 832 816 193.7
D 7 80 310662 1599.43 832 816 193.7
D 2 250 81058 414.21 832 816 193.7

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