ASTROSAT CZTI

Data Quality Report

Orbit 36771

Creation date: 2024-06-27T21:31:26.331013
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_087T05_9000005240_36771cztM0_level2.evt modeM0/AS1A11_087T05_9000005240_36771cztM0_level2_quad_clean.evt
Size (bytes)665,447,04061,323,840
Size634.6 MB 58.5 MB
Events in quadrant A2,738,600382,602
Events in quadrant B8,221,019353,156
Events in quadrant C3,090,873384,217
Events in quadrant D5,722,313343,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115723
B0282332
C0125072
D0208312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562140.071162%
B5621242443.123999%
C5621500.889521%
D5621111619.854118%

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 7353 5622 0 0 0.00% 0.00%
B 7353 5622 2243 2243 30.50% 39.90%
C 7353 5622 41 41 0.56% 0.73%
D 7353 5622 1065 1065 14.48% 18.94%

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 217865 1657.98 647 633 131.0
A 13 6 8678 61.4 647 633 131.0
A 13 254 8437 59.56 647 633 131.0
B 12 1 6128679 61176.5 509 497 100.2
B 0 189 24450 239.12 509 497 100.2
B 0 213 21416 208.83 509 497 100.2
C 15 214 241674 1631.3 628 632 147.8
C 14 254 236839 1598.58 628 632 147.8
C 0 207 88768 596.48 628 632 147.8
D 12 227 2707125 19929.46 555 541 135.8
D 13 249 330586 2430.23 555 541 135.8
D 12 6 246881 1813.88 555 541 135.8

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