ASTROSAT CZTI

Data Quality Report

Orbit 04499

Creation date: 2024-06-27T14:43:34.097623
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/AS1SLEW_01234_9000000565_04499cztM0_level2.evt modeM0/AS1SLEW_01234_9000000565_04499cztM0_level2_quad_clean.evt
Size (bytes)80,864,6403,804,480
Size77.1 MB 3.6 MB
Events in quadrant A561,4765,826
Events in quadrant B625,3585,708
Events in quadrant C535,1515,826
Events in quadrant D641,5775,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024470
B026810
C024250
D027650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121100.000000%
B1211131.073493%
C121100.000000%
D1211292.394715%

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 1211 1211 0 0 0.00% 0.00%
B 1211 1211 8 8 0.66% 0.66%
C 1211 1211 0 0 0.00% 0.00%
D 1211 1211 22 22 1.82% 1.82%

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 0 13 17595 573.45 139 135 30.4
A 7 16 6754 217.39 139 135 30.4
A 0 226 1419 42.17 139 135 30.4
B 10 16 83968 2894.55 138 135 29.0
B 15 204 4029 134.45 138 135 29.0
B 12 111 2451 79.97 138 135 29.0
C 13 61 1148 30.24 136 137 33.4
C 9 221 662 15.7 136 137 33.4
C 9 54 649 15.31 136 137 33.4
D 13 235 110926 3244.22 135 131 34.2
D 13 239 7751 223.12 135 131 34.2
D 2 136 7068 203.12 135 131 34.2

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