ASTROSAT CZTI

Data Quality Report

Orbit 01004

Creation date: 2024-06-27T14:06:01.673581
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/AS1P01_998T02_9000000190_01004cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01004cztM0_level2_quad_clean.evt
Size (bytes)1,318,141,440137,378,880
Size1.2 GB 131.0 MB
Events in quadrant A9,753,322907,664
Events in quadrant B10,395,355917,303
Events in quadrant C10,086,316895,599
Events in quadrant D9,149,611877,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347133
B0366303
C0356763
D0329283

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8094130.160613%
B8094460.568322%
C8094130.160613%
D8094350.432419%

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 8454 8097 404 404 4.78% 4.99%
B 8454 8097 567 567 6.71% 7.00%
C 8454 8097 487 487 5.76% 6.01%
D 8454 8097 338 338 4.00% 4.17%

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 15 233 36488 55.81 2531 2546 608.1
A 11 79 10910 13.75 2531 2546 608.1
A 3 111 7805 8.65 2531 2546 608.1
B 14 53 61642 92.36 2675 2677 638.4
B 5 63 38083 55.46 2675 2677 638.4
B 7 221 32562 46.81 2675 2677 638.4
C 15 241 410511 594.96 2454 2538 685.7
C 3 79 46484 64.09 2454 2538 685.7
C 3 111 44229 60.8 2454 2538 685.7
D 1 4 190870 259.28 2344 2420 726.8
D 13 13 57245 75.43 2344 2420 726.8
D 7 143 53835 70.74 2344 2420 726.8

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