ASTROSAT CZTI

Data Quality Report

Orbit 38712

Creation date: 2024-06-27T21:55:27.202960
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_054T01_9000005392_38712cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38712cztM0_level2_quad_clean.evt
Size (bytes)544,199,04082,653,120
Size519.0 MB 78.8 MB
Events in quadrant A3,185,804618,234
Events in quadrant B2,680,161633,540
Events in quadrant C2,654,955597,530
Events in quadrant D11,194,394267,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127253
B0116162
C0111942
D0370672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5514621.124411%
B5514420.761697%
C551440.072543%
D5514343362.259703%

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 7037 5515 39 39 0.55% 0.71%
B 7037 5515 20 20 0.28% 0.36%
C 7037 5515 2 2 0.03% 0.04%
D 7037 5513 2959 2959 42.05% 53.67%

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 415397 3244.75 623 610 127.8
A 0 8 346587 2706.47 623 610 127.8
A 13 248 14619 109.59 623 610 127.8
B 4 171 122507 1000.45 619 601 121.9
B 5 200 53232 431.93 619 601 121.9
B 0 230 17290 136.96 619 601 121.9
C 15 214 230542 1605.78 606 610 143.2
C 14 254 32745 224.42 606 610 143.2
C 1 23 11648 77.09 606 610 143.2
D 2 16 7734000 61364.65 506 492 126.0
D 12 235 954669 7571.3 506 492 126.0
D 12 233 160277 1267.88 506 492 126.0

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