ASTROSAT CZTI

Data Quality Report

Orbit 01136

Creation date: 2024-06-27T14:08:05.055801
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/AS1P01_997T03_9000000216_01136cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01136cztM0_level2_quad_clean.evt
Size (bytes)1,057,705,920100,388,160
Size1008.7 MB 95.7 MB
Events in quadrant A7,874,719653,060
Events in quadrant B8,265,783649,000
Events in quadrant C8,065,390634,781
Events in quadrant D7,375,053629,149

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282712
B0293951
C0287801
D0267791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A680150.073519%
B6801210.308778%
C680130.044111%
D6801560.823408%

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 7446 6802 123 123 1.65% 1.81%
B 7446 6802 166 166 2.23% 2.44%
C 7446 6802 115 115 1.54% 1.69%
D 7446 6802 185 185 2.48% 2.72%

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 14 238 30858 58.59 2043 2061 491.5
A 12 243 7975 12.03 2043 2061 491.5
A 11 79 7920 11.92 2043 2061 491.5
B 8 4 58644 112.95 2131 2141 500.2
B 14 3 41703 79.09 2131 2141 500.2
B 15 22 28401 52.49 2131 2141 500.2
C 15 241 309918 560.22 1961 2030 549.6
C 0 236 55119 96.6 1961 2030 549.6
C 3 111 23264 38.64 1961 2030 549.6
D 2 16 308144 528.38 1878 1943 579.5
D 13 189 17230 26.38 1878 1943 579.5
D 9 11 15273 23.0 1878 1943 579.5

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