ASTROSAT CZTI

Data Quality Report

Orbit 04040

Creation date: 2024-06-27T14:36:39.656529
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/AS1G05_246T03_9000000516_04040cztM0_level2.evt modeM0/AS1G05_246T03_9000000516_04040cztM0_level2_quad_clean.evt
Size (bytes)502,392,96073,431,360
Size479.1 MB 70.0 MB
Events in quadrant A5,936,791432,150
Events in quadrant B3,100,462450,602
Events in quadrant C2,834,567451,433
Events in quadrant D2,901,939435,560

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221993
B0138302
C0133094
D0136172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65093926.022430%
B6509570.875711%
C6508150.230486%
D6509300.460900%

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 7584 6510 195 195 2.57% 3.00%
B 7584 6509 24 24 0.32% 0.37%
C 7584 6510 0 0 0.00% 0.00%
D 7584 6510 16 16 0.21% 0.25%

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 8 15 1588003 10926.51 715 700 145.3
A 0 199 1342261 9234.9 715 700 145.3
A 0 226 143683 984.25 715 700 145.3
B 10 16 117638 825.92 741 724 141.6
B 14 167 40907 283.87 741 724 141.6
B 15 204 40853 283.48 741 724 141.6
C 9 144 22505 131.88 715 719 165.2
C 1 16 12019 68.4 715 719 165.2
C 13 61 6013 32.05 715 719 165.2
D 2 232 130617 760.86 703 682 170.8
D 2 14 37653 216.49 703 682 170.8
D 4 95 34146 195.96 703 682 170.8

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