ASTROSAT CZTI

Data Quality Report

Orbit 19954

Creation date: 2024-06-27T18:09:09.500978
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/AS1A05_160T01_9000002970_19954cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19954cztM0_level2_quad_clean.evt
Size (bytes)1,612,428,480237,000,960
Size1.5 GB 226.0 MB
Events in quadrant A17,691,8101,341,048
Events in quadrant B9,535,6811,560,110
Events in quadrant C10,614,9721,488,381
Events in quadrant D9,686,3421,457,267

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0653275
B0408174
C0436964
D0422494

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19306376419.496530%
B193062991.548741%
C193075272.729580%
D193073882.009634%

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 21506 19306 3096 3096 14.40% 16.04%
B 21506 19306 46 46 0.21% 0.24%
C 21507 19308 174 174 0.81% 0.90%
D 21507 19309 250 250 1.16% 1.29%

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 9389600 22272.87 2090 2045 421.5
A 5 16 170652 400.04 2090 2045 421.5
A 14 254 81431 188.35 2090 2045 421.5
B 7 220 202049 448.76 2335 2273 445.2
B 12 111 55766 120.16 2335 2273 445.2
B 11 111 48826 104.57 2335 2273 445.2
C 3 233 758086 1442.51 2241 2258 524.0
C 9 221 740763 1409.45 2241 2258 524.0
C 14 238 344255 652.71 2241 2258 524.0
D 7 238 575199 1027.13 2277 2209 557.9
D 1 52 253379 450.24 2277 2209 557.9
D 12 233 127575 224.73 2277 2209 557.9

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