ASTROSAT CZTI

Data Quality Report

Orbit 31752

Creation date: 2024-06-27T20:32:17.087421
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/AS1T04_034T01_9000004632_31752cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31752cztM0_level2_quad_clean.evt
Size (bytes)1,380,352,320159,148,800
Size1.3 GB 151.8 MB
Events in quadrant A15,387,947880,413
Events in quadrant B10,031,1721,044,141
Events in quadrant C8,155,4551,001,572
Events in quadrant D7,363,2171,002,738

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0545873
B0398783
C0324353
D0301093

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12867344726.789461%
B128672692.090619%
C128675113.971400%
D12867930.722779%

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 14182 12868 2072 2072 14.61% 16.10%
B 14182 12869 68 68 0.48% 0.53%
C 14182 12869 140 140 0.99% 1.09%
D 14182 12869 12 12 0.08% 0.09%

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 10132205 37064.04 1362 1335 273.3
A 13 254 19051 64.81 1362 1335 273.3
A 3 137 13940 46.12 1362 1335 273.3
B 6 159 3425290 11576.76 1531 1490 295.7
B 4 80 299632 1008.1 1531 1490 295.7
B 10 245 80810 268.2 1531 1490 295.7
C 0 10 1076473 3114.33 1472 1482 345.2
C 3 233 1001282 2896.49 1472 1482 345.2
C 14 238 245255 706.23 1472 1482 345.2
D 8 195 1378459 3833.95 1506 1467 359.2
D 2 250 134892 371.49 1506 1467 359.2
D 12 233 93720 256.86 1506 1467 359.2

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