ASTROSAT CZTI

Data Quality Report

Orbit 37926

Creation date: 2024-06-27T21:46:12.818360
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/AS1T05_059T01_9000005354_37926cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37926cztM0_level2_quad_clean.evt
Size (bytes)416,635,20055,431,360
Size397.3 MB 52.9 MB
Events in quadrant A2,918,605343,360
Events in quadrant B3,017,904340,931
Events in quadrant C2,827,838336,124
Events in quadrant D3,508,100301,573

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116383
B0120082
C0113822
D0136562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5089130.255453%
B5089731.434466%
C5089440.864610%
D50892194.303399%

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 9245 5091 4 4 0.04% 0.08%
B 9245 5091 51 51 0.55% 1.00%
C 9245 5091 30 30 0.32% 0.59%
D 9245 5091 189 189 2.04% 3.71%

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 10 83 357048 2772.66 647 637 128.5
A 12 189 27001 205.1 647 637 128.5
A 13 6 21452 161.93 647 637 128.5
B 5 172 225754 1856.88 634 618 121.2
B 0 229 159433 1309.88 634 618 121.2
B 4 81 49756 405.28 634 618 121.2
C 15 214 217735 1504.75 625 631 144.3
C 0 10 136134 939.17 625 631 144.3
C 14 254 24082 162.54 625 631 144.3
D 12 227 385847 2584.75 619 604 149.0
D 10 199 169880 1135.74 619 604 149.0
D 12 233 100430 669.77 619 604 149.0

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