ASTROSAT CZTI

Data Quality Report

Orbit 08667

Creation date: 2024-06-27T15:35:39.673153
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/AS1G07_024T01_9000001206_08667cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08667cztM0_level2_quad_clean.evt
Size (bytes)387,489,600108,403,200
Size369.5 MB 103.4 MB
Events in quadrant A2,581,121722,005
Events in quadrant B2,996,615736,765
Events in quadrant C2,840,418722,497
Events in quadrant D2,925,225699,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118112
B0129161
C0124761
D0128791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5757330.573215%
B5757691.198541%
C57571392.414452%
D57571162.014938%

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 6913 5757 1 1 0.01% 0.02%
B 6913 5757 23 23 0.33% 0.40%
C 6913 5757 65 65 0.94% 1.13%
D 6913 5757 71 71 1.03% 1.23%

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 13049 92.46 661 646 134.1
A 15 174 10189 71.14 661 646 134.1
A 13 251 6602 44.4 661 646 134.1
B 4 48 135857 1086.31 669 653 124.5
B 0 231 73227 583.1 669 653 124.5
B 0 219 62255 494.95 669 653 124.5
C 4 254 265400 1763.95 648 650 150.1
C 1 16 45063 295.91 648 650 150.1
C 13 61 5137 29.9 648 650 150.1
D 10 253 137826 872.67 650 629 157.2
D 7 71 119239 754.44 650 629 157.2
D 2 152 86808 548.16 650 629 157.2

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