ASTROSAT CZTI

Data Quality Report

Orbit 22156

Creation date: 2024-06-27T18:37:33.195297
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_145T01_9000003278_22156cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22156cztM0_level2_quad_clean.evt
Size (bytes)475,251,84097,194,240
Size453.2 MB 92.7 MB
Events in quadrant A3,394,425618,278
Events in quadrant B3,497,124632,364
Events in quadrant C3,468,989603,772
Events in quadrant D3,549,028593,461

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145362
B0147502
C0146352
D0152442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7117220.309119%
B7118420.590053%
C7118600.842933%
D7118470.660298%

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 9123 7120 0 0 0.00% 0.00%
B 9124 7121 2 2 0.02% 0.03%
C 9124 7121 0 0 0.00% 0.00%
D 9124 7121 25 25 0.27% 0.35%

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 3 1 12281 64.82 876 859 176.2
A 13 254 11850 62.37 876 859 176.2
A 3 137 7607 38.29 876 859 176.2
B 3 64 43135 251.53 880 858 168.1
B 12 111 20512 116.93 880 858 168.1
B 11 111 18491 104.91 880 858 168.1
C 14 238 135147 678.06 849 856 198.1
C 9 54 14176 67.26 849 856 198.1
C 13 61 5887 25.4 849 856 198.1
D 1 52 132403 634.69 856 831 207.3
D 10 230 73901 352.48 856 831 207.3
D 13 104 44195 209.18 856 831 207.3

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