ASTROSAT CZTI

Data Quality Report

Orbit 06970

Creation date: 2024-06-27T15:13:53.118554
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/AS1A02_090T02_9000000956_06970cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06970cztM0_level2_quad_clean.evt
Size (bytes)276,822,72057,916,800
Size264.0 MB 55.2 MB
Events in quadrant A1,934,400364,438
Events in quadrant B2,118,265367,537
Events in quadrant C1,842,466367,165
Events in quadrant D2,198,004355,081

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088492
B095001
C087881
D094911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4254521.222379%
B42541333.126469%
C4254300.705219%
D4254791.857076%

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 4489 4256 0 0 0.00% 0.00%
B 4489 4256 22 22 0.49% 0.52%
C 4489 4256 0 0 0.00% 0.00%
D 4489 4256 5 5 0.11% 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 13 14 66349 657.4 481 469 100.2
A 0 128 8794 83.07 481 469 100.2
A 0 226 4618 41.4 481 469 100.2
B 0 228 183063 1925.5 483 470 94.8
B 0 197 20187 207.92 483 470 94.8
B 4 81 14790 151.01 483 470 94.8
C 1 16 5467 44.9 470 472 111.2
C 13 61 3791 29.84 470 472 111.2
C 9 68 2057 14.25 470 472 111.2
D 8 195 308887 2657.04 467 453 116.1
D 2 14 80007 685.33 467 453 116.1
D 2 136 32015 271.89 467 453 116.1

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