ASTROSAT CZTI

Data Quality Report

Orbit 38360

Creation date: 2024-06-27T21:51:39.212040
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/AS1A10_094T24_9000005374_38360cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38360cztM0_level2_quad_clean.evt
Size (bytes)1,297,307,520227,816,640
Size1.2 GB 217.3 MB
Events in quadrant A8,195,7431,661,701
Events in quadrant B7,118,1731,697,736
Events in quadrant C6,651,0241,619,903
Events in quadrant D25,040,7401,008,839

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326756
B0294883
C0277993
D0836483

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131731130.857815%
B13174970.736299%
C13174220.166996%
D13174505838.393806%

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 19001 13177 57 57 0.30% 0.43%
B 19001 13177 48 48 0.25% 0.36%
C 19001 13177 16 16 0.08% 0.12%
D 19001 13177 6042 6042 31.80% 45.85%

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 895573 2922.43 1537 1509 305.9
A 12 16 604289 1970.31 1537 1509 305.9
A 9 143 379343 1235.03 1537 1509 305.9
B 4 170 238067 841.17 1537 1500 281.2
B 0 183 230427 814.01 1537 1500 281.2
B 5 172 156656 551.7 1537 1500 281.2
C 15 214 553263 1626.81 1484 1499 339.2
C 15 159 181658 531.18 1484 1499 339.2
C 14 254 45810 130.65 1484 1499 339.2
D 10 203 16628230 49621.5 1362 1324 335.1
D 2 16 992501 2958.08 1362 1324 335.1
D 12 227 751075 2237.56 1362 1324 335.1

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