ASTROSAT CZTI

Data Quality Report

Orbit 36393

Creation date: 2022-06-22T01:32:04.189874
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/AS1T04_084T01_9000005198_36393cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36393cztM0_level2_quad_clean.evt
Size (bytes)437,362,56063,285,120
Size417.1 MB 60.4 MB
Events in quadrant A2,882,071409,053
Events in quadrant B4,189,236379,233
Events in quadrant C2,695,942401,642
Events in quadrant D3,143,396380,079

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117293
B0157112
C0106562
D0124482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4932450.912409%
B493250210.178427%
C4932721.459854%
D49321372.777778%

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 7024 4933 13 13 0.19% 0.26%
B 7024 4933 360 360 5.13% 7.30%
C 7024 4933 55 55 0.78% 1.11%
D 7024 4933 139 139 1.98% 2.82%

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 15 223 350231 2880.16 605 595 121.4
A 10 83 178737 1467.46 605 595 121.4
A 13 254 8995 69.2 605 595 121.4
B 5 172 1226139 11125.43 574 558 110.2
B 8 128 211944 1918.89 574 558 110.2
B 4 232 171244 1549.43 574 558 110.2
C 15 214 213728 1570.21 585 592 135.7
C 0 10 194762 1430.49 585 592 135.7
C 7 222 5527 36.36 585 592 135.7
D 12 6 369977 2601.23 584 568 142.0
D 13 171 158152 1109.64 584 568 142.0
D 2 249 116311 815.02 584 568 142.0

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