ASTROSAT CZTI

Data Quality Report

Orbit 38843

Creation date: 2024-06-27T21:57:09.528144
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_077T06_9000005408_38843cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38843cztM0_level2_quad_clean.evt
Size (bytes)356,405,76096,672,960
Size339.9 MB 92.2 MB
Events in quadrant A3,583,189643,934
Events in quadrant B2,669,227663,771
Events in quadrant C2,806,056631,879
Events in quadrant D3,677,875577,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143793
B0120332
C0119962
D0150282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5866651.108080%
B5866280.477327%
C586650.085237%
D5866901.534265%

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 7210 5867 60 60 0.83% 1.02%
B 7210 5867 18 18 0.25% 0.31%
C 7210 5867 1 1 0.01% 0.02%
D 7210 5867 64 64 0.89% 1.09%

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 420961 3201.13 644 631 131.3
A 13 248 346037 2630.53 644 631 131.3
A 12 16 190414 1445.34 644 631 131.3
B 5 172 71209 561.29 641 624 125.8
B 0 230 25209 195.5 641 624 125.8
B 0 221 17801 136.59 641 624 125.8
C 15 214 240882 1647.38 627 631 145.8
C 3 233 98402 670.41 627 631 145.8
C 15 208 9483 60.7 627 631 145.8
D 12 235 383237 2539.71 624 608 150.7
D 5 222 331006 2193.03 624 608 150.7
D 2 249 187055 1237.55 624 608 150.7

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