ASTROSAT CZTI

Data Quality Report

Orbit 37385

Creation date: 2024-06-27T21:39:18.735512
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/AS1C07_001T01_9000005320_37385cztM0_level2.evt modeM0/AS1C07_001T01_9000005320_37385cztM0_level2_quad_clean.evt
Size (bytes)623,266,56094,622,400
Size594.4 MB 90.2 MB
Events in quadrant A2,910,531659,384
Events in quadrant B2,727,735667,839
Events in quadrant C2,831,219662,096
Events in quadrant D10,035,804492,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122873
B0118402
C0119752
D0335842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5466330.603732%
B5466280.512258%
C5466420.768386%
D5466269449.286498%

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 7080 5467 16 16 0.23% 0.29%
B 7080 5467 16 16 0.23% 0.29%
C 7080 5467 29 29 0.41% 0.53%
D 7080 5467 2473 2473 34.93% 45.24%

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 294367 2396.03 603 591 122.6
A 6 10 151641 1231.96 603 591 122.6
A 13 28 33312 266.87 603 591 122.6
B 5 172 82735 712.76 601 585 115.3
B 4 232 65909 566.78 601 585 115.3
B 0 229 44022 376.88 601 585 115.3
C 15 214 232504 1687.68 590 594 137.4
C 0 10 88286 638.16 590 594 137.4
C 15 159 78470 566.73 590 594 137.4
D 12 235 6483973 54193.43 481 466 119.6
D 1 47 605727 5059.17 481 466 119.6
D 12 227 383306 3200.03 481 466 119.6

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