ASTROSAT CZTI

Data Quality Report

Orbit 13725

Creation date: 2024-06-27T16:45:12.171096
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/AS1G08_039T01_9000002036_13725cztM0_level2.evt modeM0/AS1G08_039T01_9000002036_13725cztM0_level2_quad_clean.evt
Size (bytes)507,931,20086,368,320
Size484.4 MB 82.4 MB
Events in quadrant A3,470,969535,633
Events in quadrant B4,003,749570,493
Events in quadrant C3,557,245517,526
Events in quadrant D3,862,056490,569

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149152
B0162251
C0150241
D0161441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71951702.362752%
B71951902.640723%
C71951091.514941%
D71951522.112578%

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 7531 7197 0 0 0.00% 0.00%
B 7531 7198 9 9 0.12% 0.13%
C 7531 7198 0 0 0.00% 0.00%
D 7531 7198 26 26 0.35% 0.36%

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 24219 126.52 893 872 184.5
A 1 162 10009 49.51 893 872 184.5
A 0 226 7953 38.37 893 872 184.5
B 10 244 228113 1320.37 896 874 172.1
B 4 173 69899 401.07 896 874 172.1
B 0 219 63801 365.64 896 874 172.1
C 3 233 149900 737.84 863 868 202.0
C 4 254 39306 190.3 863 868 202.0
C 13 61 6420 27.49 863 868 202.0
D 5 222 394581 1886.98 861 837 208.7
D 8 195 92746 440.46 861 837 208.7
D 13 249 71217 337.29 861 837 208.7

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