ASTROSAT CZTI

Data Quality Report

Orbit 13716

Creation date: 2024-06-27T16:45:08.090578
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/AS1T02_041T01_9000002032_13716cztM0_level2.evt modeM0/AS1T02_041T01_9000002032_13716cztM0_level2_quad_clean.evt
Size (bytes)439,692,480128,646,720
Size419.3 MB 122.7 MB
Events in quadrant A3,083,703841,251
Events in quadrant B3,201,523869,297
Events in quadrant C3,386,383876,604
Events in quadrant D3,186,473840,063

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138293
B0139972
C0144332
D0141312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6730200.297177%
B6730200.297177%
C6730741.099554%
D6730170.252600%

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 7661 6732 4 4 0.05% 0.06%
B 7661 6732 1 1 0.01% 0.01%
C 7661 6732 39 39 0.51% 0.58%
D 7661 6732 8 8 0.10% 0.12%

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 15 69 31998 193.65 787 768 161.3
A 1 162 11767 68.2 787 768 161.3
A 15 222 9981 57.13 787 768 161.3
B 0 219 34311 221.99 796 776 151.1
B 8 250 25521 163.81 796 776 151.1
B 4 173 17478 110.56 796 776 151.1
C 4 254 212585 1182.79 782 787 179.1
C 3 233 117500 651.78 782 787 179.1
C 14 234 6287 30.71 782 787 179.1
D 8 195 72451 386.49 778 754 185.5
D 13 249 53900 286.49 778 754 185.5
D 10 157 51668 274.46 778 754 185.5

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