ASTROSAT CZTI

Data Quality Report

Orbit 49690

Creation date: 2024-12-09T21:45:03.271828
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/AS1T05_233T01_9000006438_49690cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49690cztM0_level2_quad_clean.evt
Size (bytes)1,120,317,12035,475,840
Size1.0 GB 33.8 MB
Events in quadrant A14,685,97660,214
Events in quadrant B3,651,136582,979
Events in quadrant C7,976,9717,185
Events in quadrant D14,692,6805,538

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0476761
B0150571
C0279061
D0477181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5982551792.226680%
B59832524.211934%
C5983591398.830018%
D5983593699.214441%

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 6892 5982 5414 5414 78.55% 90.50%
B 6893 5985 127 127 1.84% 2.12%
C 6892 5982 927 927 13.45% 15.50%
D 6892 5982 5458 5458 79.19% 91.24%

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 6124051 53543.21 378 363 114.4
A 12 50 1542569 13484.46 378 363 114.4
A 15 191 696146 6083.66 378 363 114.4
B 4 206 289921 2182.36 627 608 132.6
B 1 255 289397 2178.41 627 608 132.6
B 5 185 121305 910.45 627 608 132.6
C 15 180 2817940 137977.61 47 45 20.4
C 15 190 1887654 92426.36 47 45 20.4
C 15 181 696669 34110.04 47 45 20.4
D 15 40 3280212 45906.69 182 172 71.5
D 7 45 1873270 26215.45 182 172 71.5
D 7 60 1413205 19776.49 182 172 71.5

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