ASTROSAT CZTI

Data Quality Report

Orbit 39945

Creation date: 2024-06-27T22:10:26.973564
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/AS1A12_044T21_9000005512_39945cztM0_level2.fits modeM0/AS1A12_044T21_9000005512_39945cztM0_level2_quad_clean.evt
Size (bytes)178,937,28038,459,520
Size170.6 MB 36.7 MB
Events in quadrant A1,312,625263,617
Events in quadrant B1,169,988266,429
Events in quadrant C2,086,857235,576
Events in quadrant D1,866,631226,657

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053841
B050891
C077931
D072331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A238670.293378%
B2386110.461023%
C23861807.544007%
D23861395.825650%

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 3730 2387 7 7 0.19% 0.29%
B 3730 2387 6 6 0.16% 0.25%
C 3730 2387 159 159 4.26% 6.66%
D 3730 2387 115 115 3.08% 4.82%

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 10 83 230003 4077.99 265 260 56.3
A 13 248 34101 600.69 265 260 56.3
A 2 79 8240 141.65 265 260 56.3
B 0 183 55849 1051.8 263 256 52.9
B 5 255 27345 512.51 263 256 52.9
B 4 170 25460 476.85 263 256 52.9
C 9 54 977129 16004.49 252 254 61.0
C 15 214 98103 1603.1 252 254 61.0
C 0 10 15230 245.36 252 254 61.0
D 2 249 472337 7371.09 254 246 64.0
D 2 153 146642 2285.78 254 246 64.0
D 2 250 82428 1283.17 254 246 64.0

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