ASTROSAT CZTI

Data Quality Report

Orbit 41263

Creation date: 2024-06-27T22:26:43.633828
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_052T04_9000005638_41263cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41263cztM0_level2_quad_clean.evt
Size (bytes)375,240,96095,967,360
Size357.9 MB 91.5 MB
Events in quadrant A3,147,508650,480
Events in quadrant B3,338,505633,503
Events in quadrant C3,365,138620,856
Events in quadrant D3,574,330583,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130213
B0141442
C0138042
D0148652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5969210.351818%
B59692424.054280%
C59691422.378958%
D59691332.228179%

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 7252 5970 8 8 0.11% 0.13%
B 7252 5970 188 188 2.59% 3.15%
C 7252 5970 131 131 1.81% 2.19%
D 7252 5970 128 128 1.77% 2.14%

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 567050 4297.46 646 632 131.8
A 12 189 40243 300.53 646 632 131.8
A 13 248 26307 194.8 646 632 131.8
B 0 186 701223 5682.31 631 613 123.3
B 0 190 65324 524.84 631 613 123.3
B 0 245 46559 372.65 631 613 123.3
C 9 54 357620 2442.97 622 626 146.1
C 0 10 308790 2108.82 622 626 146.1
C 15 214 252963 1726.78 622 626 146.1
D 1 52 457685 2987.3 625 606 153.0
D 12 233 257331 1677.86 625 606 153.0
D 13 249 211129 1375.9 625 606 153.0

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