ASTROSAT CZTI

Data Quality Report

Orbit 38985

Creation date: 2024-06-27T21:58:59.674627
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_095T02_9000005420_38985cztM0_level2.fits modeM0/AS1A12_095T02_9000005420_38985cztM0_level2_quad_clean.evt
Size (bytes)182,923,20050,973,120
Size174.4 MB 48.6 MB
Events in quadrant A1,589,755342,800
Events in quadrant B1,332,356352,749
Events in quadrant C1,387,534338,298
Events in quadrant D2,240,902308,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065131
B057660
C057610
D086810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2812120.426743%
B281220.071124%
C281240.142248%
D2812602.133713%

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 4935 2813 4 4 0.08% 0.14%
B 4935 2813 2 2 0.04% 0.07%
C 4935 2813 1 1 0.02% 0.04%
D 4935 2813 68 68 1.38% 2.42%

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 209760 3083.97 328 321 67.9
A 15 222 92457 1356.7 328 321 67.9
A 9 143 15211 219.25 328 321 67.9
B 5 172 34013 527.46 325 317 63.9
B 0 230 8239 124.01 325 317 63.9
B 12 111 7844 117.82 325 317 63.9
C 15 214 123859 1631.69 320 323 75.7
C 14 254 5341 66.28 320 323 75.7
C 12 249 4071 49.5 320 323 75.7
D 12 235 776868 10067.11 317 309 77.1
D 12 227 139811 1808.47 317 309 77.1
D 1 47 62020 800.01 317 309 77.1

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