ASTROSAT CZTI

Data Quality Report

Orbit 24613

Creation date: 2024-06-27T19:07:55.466732
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_189T01_9000003614_24613cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24613cztM0_level2_quad_clean.evt
Size (bytes)764,049,600124,384,320
Size728.7 MB 118.6 MB
Events in quadrant A3,963,246822,355
Events in quadrant B4,835,458806,455
Events in quadrant C9,188,002763,780
Events in quadrant D4,582,363788,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174232
B0200562
C0332582
D0191092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8428460.545800%
B84293934.662475%
C8429176720.963341%
D8429440.522007%

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 9038 8433 0 0 0.00% 0.00%
B 9039 8434 225 225 2.49% 2.67%
C 9039 8434 1125 1125 12.45% 13.34%
D 9039 8434 4 4 0.04% 0.05%

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 13526 60.29 1025 1004 207.7
A 3 137 9764 42.18 1025 1004 207.7
A 0 226 8622 36.68 1025 1004 207.7
B 3 64 906889 4717.48 998 971 192.0
B 12 111 24413 122.07 998 971 192.0
B 11 111 22013 109.57 998 971 192.0
C 7 247 5165908 23499.0 938 944 219.8
C 2 16 156771 708.97 938 944 219.8
C 14 238 145028 655.54 938 944 219.8
D 8 195 405449 1654.78 1004 975 244.4
D 1 52 317593 1295.35 1004 975 244.4
D 2 234 34458 136.99 1004 975 244.4

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