ASTROSAT CZTI

Data Quality Report

Orbit 39882

Creation date: 2024-06-27T22:09:51.455104
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_032T03_9000005502_39882cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39882cztM0_level2_quad_clean.evt
Size (bytes)322,683,84088,781,760
Size307.7 MB 84.7 MB
Events in quadrant A2,991,927599,169
Events in quadrant B2,639,972612,709
Events in quadrant C2,622,807596,293
Events in quadrant D3,306,253534,816

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119393
B0108732
C0104702
D0129602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4926240.487211%
B4926310.629314%
C4926170.345108%
D49271943.937487%

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 7079 4927 17 17 0.24% 0.35%
B 7079 4927 9 9 0.13% 0.18%
C 7079 4927 19 19 0.27% 0.39%
D 7080 4928 162 162 2.29% 3.29%

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 10 83 488555 4172.55 578 567 117.0
A 6 10 105778 899.61 578 567 117.0
A 9 143 47892 404.65 578 567 117.0
B 0 230 100361 914.65 571 555 109.1
B 0 183 98943 901.66 571 555 109.1
B 0 221 74406 676.79 571 555 109.1
C 15 214 213676 1616.79 566 570 131.8
C 14 254 105104 793.08 566 570 131.8
C 1 16 33745 251.69 566 570 131.8
D 2 249 288035 2096.46 559 544 137.1
D 12 227 285078 2074.89 559 544 137.1
D 13 249 166249 1208.36 559 544 137.1

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