ASTROSAT CZTI

Data Quality Report

Orbit 39305

Creation date: 2024-06-27T22:02:59.298218
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_044T04_9000005464_39305cztM0_level2.fits modeM0/AS1A12_044T04_9000005464_39305cztM0_level2_quad_clean.evt
Size (bytes)588,539,52075,522,240
Size561.3 MB 72.0 MB
Events in quadrant A2,981,035605,594
Events in quadrant B3,003,479611,363
Events in quadrant C2,641,369590,637
Events in quadrant D12,747,403107,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120463
B0124022
C0112212
D0415442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5299250.471787%
B5299971.830534%
C5299200.377430%
D5299450184.940555%

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 7061 5300 16 16 0.23% 0.30%
B 7061 5300 77 77 1.09% 1.45%
C 7061 5300 13 13 0.18% 0.25%
D 7061 5300 3757 3757 53.21% 70.89%

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 474886 3970.8 589 578 119.4
A 13 248 175634 1465.53 589 578 119.4
A 12 189 29322 240.64 589 578 119.4
B 0 229 204000 1821.33 581 568 111.7
B 5 255 196382 1753.12 581 568 111.7
B 0 186 105312 937.77 581 568 111.7
C 15 214 241270 1827.73 566 571 131.7
C 9 187 102658 775.19 566 571 131.7
C 14 254 44223 331.47 566 571 131.7
D 12 235 11086318 141763.41 315 305 78.2
D 13 249 121146 1545.27 315 305 78.2
D 5 222 85788 1093.12 315 305 78.2

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