ASTROSAT CZTI

Data Quality Report

Orbit 48575

Creation date: 2024-09-21T04:11:52.368434
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/AS1A13_037T01_9000006436_48575cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48575cztM0_level2_quad_clean.evt
Size (bytes)460,457,28098,729,280
Size439.1 MB 94.2 MB
Events in quadrant A6,279,349646,670
Events in quadrant B2,689,492687,235
Events in quadrant C2,544,249658,165
Events in quadrant D5,049,218563,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226941
B0127271
C0125381
D0194741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62141572.526553%
B6215200.321802%
C621580.128721%
D62154276.870475%

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 7325 6215 93 93 1.27% 1.50%
B 7326 6216 1 1 0.01% 0.02%
C 7326 6216 0 0 0.00% 0.00%
D 7326 6216 377 377 5.15% 6.06%

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 3650274 27194.93 646 633 134.2
A 0 31 128123 949.98 646 633 134.2
A 13 254 12713 90.01 646 633 134.2
B 5 255 40096 305.96 656 634 129.0
B 12 18 27887 211.3 656 634 129.0
B 12 111 16605 123.83 656 634 129.0
C 12 250 5068 28.74 650 654 153.6
C 13 61 4152 22.78 650 654 153.6
C 14 254 4033 22.0 650 654 153.6
D 2 165 2225023 14245.52 626 605 156.1
D 13 171 257167 1643.06 626 605 156.1
D 12 128 64789 411.04 626 605 156.1

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