ASTROSAT CZTI

Data Quality Report

Orbit 40864

Creation date: 2024-06-27T22:21:27.348087
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_104T02_9000005572_40864cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40864cztM0_level2_quad_clean.evt
Size (bytes)1,618,813,440348,053,760
Size1.5 GB 331.9 MB
Events in quadrant A11,742,2202,378,257
Events in quadrant B13,576,0072,377,008
Events in quadrant C14,069,6392,215,488
Events in quadrant D18,826,8612,044,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0479974
B0557494
C0559124
D0710574

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04520
B04520
C04520
D04520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22111450.203519%
B221118733.948261%
C2211112195.513093%
D2211114726.657320%

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 27629 22115 20 20 0.07% 0.09%
B 27629 22114 508 508 1.84% 2.30%
C 27629 22115 1010 1010 3.66% 4.57%
D 27629 22115 1274 1274 4.61% 5.76%

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 1737005 3541.53 2406 2356 489.8
A 12 189 345905 701.4 2406 2356 489.8
A 13 248 166649 335.43 2406 2356 489.8
B 4 171 3873495 8549.61 2354 2288 452.8
B 0 229 180131 392.77 2354 2288 452.8
B 0 190 142431 309.51 2354 2288 452.8
C 14 254 3971434 7582.76 2268 2283 523.4
C 15 214 890518 1696.9 2268 2283 523.4
C 0 10 159813 300.95 2268 2283 523.4
D 12 79 4305036 7749.45 2285 2223 555.2
D 13 249 2869507 5164.03 2285 2223 555.2
D 2 249 1510501 2716.44 2285 2223 555.2

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