ASTROSAT CZTI

Data Quality Report

Orbit 20211204_A11_065T07_9000004798_level2

Creation date: 2021-12-07T17:18:10.836477
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/AS1A11_065T07_9000004798cztM0_level2_bc.evt modeM0/AS1A11_065T07_9000004798cztM0_level2_quad_clean.evt
Size (bytes)274,668,48059,829,120
Size261.9 MB 57.1 MB
Events in quadrant A1,143,393366,959
Events in quadrant B2,130,538354,634
Events in quadrant C1,492,898358,267
Events in quadrant D3,163,161339,679

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112830
B0157170
C0119590
D0177430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560740.071339%
B56074287.633315%
C5607591.052256%
D5607821.462458%

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 7159 5607 0 0 0.00% 0.00%
B 7159 5607 15 15 0.21% 0.27%
C 7159 5606 3 3 0.04% 0.05%
D 7159 5606 10 10 0.14% 0.18%

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 6 11987 179.76 285 278 65.1
A 15 47 11551 173.06 285 278 65.1
A 13 254 9861 147.12 285 278 65.1
B 5 172 492928 8582.26 276 270 57.4
B 5 255 373461 6501.11 276 270 57.4
B 4 251 71451 1240.0 276 270 57.4
C 15 214 233588 3647.67 274 272 64.0
C 0 10 117790 1837.28 274 272 64.0
C 14 254 35791 555.3 274 272 64.0
D 8 195 1545947 23203.89 275 266 66.6
D 2 250 121781 1824.19 275 266 66.6
D 12 6 76843 1149.58 275 266 66.6

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