ASTROSAT CZTI

Data Quality Report

Orbit 19874

Creation date: 2024-06-27T18:08:10.344027
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/AS1T03_118T01_9000002962_19874cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19874cztM0_level2_quad_clean.evt
Size (bytes)456,096,960106,030,080
Size435.0 MB 101.1 MB
Events in quadrant A3,287,721704,958
Events in quadrant B3,283,376722,191
Events in quadrant C3,271,871693,388
Events in quadrant D3,556,453665,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135842
B0136162
C0134202
D0142722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6089470.771884%
B60891001.642306%
C6089981.609460%
D60891181.937921%

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 7409 6089 9 9 0.12% 0.15%
B 7409 6090 19 19 0.26% 0.31%
C 7409 6089 8 8 0.11% 0.13%
D 7409 6090 79 79 1.07% 1.30%

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 147210 894.46 808 794 163.7
A 11 29 28069 166.62 808 794 163.7
A 0 226 6766 36.48 808 794 163.7
B 0 197 26414 169.26 813 797 151.3
B 0 230 25981 166.4 813 797 151.3
B 3 64 24569 157.07 813 797 151.3
C 14 238 124554 671.21 793 803 184.4
C 9 221 37318 198.05 793 803 184.4
C 7 220 17339 89.69 793 803 184.4
D 1 52 372676 1948.03 794 773 190.9
D 7 238 113501 590.47 794 773 190.9
D 9 85 34347 175.86 794 773 190.9

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