ASTROSAT CZTI

Data Quality Report

Orbit 20191030_A07_007T04_9000003276_level2

Creation date: 2019-11-06T16:37:28.717608
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_007T04_9000003276cztM0_level2_bc.evt modeM0/AS1A07_007T04_9000003276cztM0_level2_quad_clean.evt
Size (bytes)4,363,459,2001,590,972,480
Size4.1 GB 1.5 GB
Events in quadrant A25,816,61510,343,037
Events in quadrant B26,647,18710,412,665
Events in quadrant C24,432,8109,944,106
Events in quadrant D47,192,6329,382,830

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01850
B01850
C01850
D01850

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02487010
B02520900
C02475650
D03354050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024040
B024040
C024040
D024040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11833014501.225387%
B11833118391.554115%
C11833019671.662300%
D11833184377.130000%

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 136351 118340 139 139 0.10% 0.12%
B 136351 118335 73 73 0.05% 0.06%
C 136351 118335 47 47 0.03% 0.04%
D 136351 118332 782 782 0.57% 0.66%

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 5 16 1058407 763.02 6383 6268 1378.9
A 13 254 202377 142.22 6383 6268 1378.9
A 4 2 64602 42.3 6383 6268 1378.9
B 3 64 1215954 1016.12 6398 6253 1190.5
B 0 230 286396 235.31 6398 6253 1190.5
B 10 246 192402 156.36 6398 6253 1190.5
C 10 22 818686 565.44 6114 6090 1437.1
C 5 4 51692 31.73 6114 6090 1437.1
C 13 61 35665 20.58 6114 6090 1437.1
D 2 133 8107957 5749.16 6070 5862 1409.3
D 1 52 6910372 4899.36 6070 5862 1409.3
D 11 176 3674564 2603.27 6070 5862 1409.3

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