ASTROSAT CZTI

Data Quality Report

Orbit 23274

Creation date: 2024-06-27T18:52:11.631959
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/AS1C05_005T01_9000003440_23274cztM0_level2.evt modeM0/AS1C05_005T01_9000003440_23274cztM0_level2_quad_clean.evt
Size (bytes)534,245,76075,510,720
Size509.5 MB 72.0 MB
Events in quadrant A3,390,258473,509
Events in quadrant B3,471,110477,971
Events in quadrant C3,502,607455,820
Events in quadrant D5,385,493436,218

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142542
B0144242
C0144322
D0204192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6343490.772505%
B6343530.835567%
C6344851.339849%
D63445668.921816%

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 7658 6343 0 0 0.00% 0.00%
B 7658 6344 3 3 0.04% 0.05%
C 7659 6344 0 0 0.00% 0.00%
D 7659 6345 470 470 6.14% 7.41%

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 13 254 10557 56.26 879 864 172.3
A 0 226 7637 39.31 879 864 172.3
A 3 137 6855 34.78 879 864 172.3
B 3 64 25058 149.65 871 852 161.7
B 12 111 18240 107.5 871 852 161.7
B 0 229 17370 102.12 871 852 161.7
C 14 238 137238 708.73 841 849 192.4
C 0 207 39595 201.34 841 849 192.4
C 8 208 24270 121.71 841 849 192.4
D 1 52 1686425 8447.66 833 809 199.5
D 7 238 287144 1435.0 833 809 199.5
D 7 38 135297 674.0 833 809 199.5

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