ASTROSAT CZTI

Data Quality Report

Orbit 36567

Creation date: 2024-06-27T21:28:31.959884
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/AS1A11_097T17_9000005222_36567cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36567cztM0_level2_quad_clean.evt
Size (bytes)379,056,96084,948,480
Size361.5 MB 81.0 MB
Events in quadrant A2,429,950573,005
Events in quadrant B2,714,292568,388
Events in quadrant C2,718,384559,158
Events in quadrant D3,288,179532,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100882
B0109381
C0108131
D0129281

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A482990.186374%
B4829571.180369%
C4829711.470284%
D48292134.410851%

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 6892 4830 1 1 0.01% 0.02%
B 6892 4830 35 35 0.51% 0.72%
C 6892 4830 44 44 0.64% 0.91%
D 6892 4830 169 169 2.45% 3.50%

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 152383 1314.86 577 566 115.5
A 15 223 25572 216.57 577 566 115.5
A 9 143 12987 107.58 577 566 115.5
B 5 255 244509 2273.13 566 553 107.3
B 0 229 62020 572.74 566 553 107.3
B 5 172 55903 515.74 566 553 107.3
C 0 10 213918 1642.64 560 566 129.9
C 15 214 202274 1552.99 560 566 129.9
C 14 254 115522 885.07 560 566 129.9
D 10 199 316253 2326.05 559 546 135.7
D 2 250 166324 1221.41 559 546 135.7
D 13 249 148330 1088.84 559 546 135.7

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