ASTROSAT CZTI

Data Quality Report

Orbit 20200403_A07_054T01_9000003604_level2

Creation date: 2020-04-06T08:44:29.184091
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_054T01_9000003604cztM0_level2_bc.evt modeM0/AS1A07_054T01_9000003604cztM0_level2_quad_clean.evt
Size (bytes)2,852,219,5201,332,478,080
Size2.7 GB 1.2 GB
Events in quadrant A14,464,7129,258,134
Events in quadrant B15,841,9379,410,603
Events in quadrant C15,068,8649,103,042
Events in quadrant D36,218,1027,775,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01442560
B01493220
C01475200
D02476260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014300
B014300
C014300
D014300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A701915410.770754%
B701919661.376245%
C701918741.245174%
D701911191916.980810%

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 81561 70193 8 8 0.01% 0.01%
B 81561 70192 29 29 0.04% 0.04%
C 81561 70193 1 1 0.00% 0.00%
D 81560 70116 1089 1089 1.34% 1.55%

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 4 2 121630 147.66 3700 3644 799.0
A 13 254 110090 133.22 3700 3644 799.0
A 15 174 71810 85.31 3700 3644 799.0
B 3 64 608921 866.09 3752 3670 698.8
B 0 190 239859 337.98 3752 3670 698.8
B 15 33 208063 292.48 3752 3670 698.8
C 7 247 544533 623.19 3623 3608 868.0
C 2 16 296679 337.64 3623 3608 868.0
C 10 9 234780 266.33 3623 3608 868.0
D 9 35 12731585 16346.38 3263 3155 778.7
D 7 238 3567764 4577.82 3263 3155 778.7
D 1 52 3266473 4190.89 3263 3155 778.7

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