ASTROSAT CZTI

Data Quality Report

Orbit 26392

Creation date: 2024-06-27T19:28:29.997789
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/AS1A09_044T02_9000003814_26392cztM0_level2.evt modeM0/AS1A09_044T02_9000003814_26392cztM0_level2_quad_clean.evt
Size (bytes)647,928,00095,981,760
Size617.9 MB 91.5 MB
Events in quadrant A4,175,589595,787
Events in quadrant B4,287,893609,317
Events in quadrant C4,582,404576,519
Events in quadrant D6,010,903544,819

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178240
B0180150
C0188530
D0236340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83382963.550012%
B83383263.909811%
C83384014.809307%
D83396617.926610%

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 8938 8340 3 3 0.03% 0.04%
B 8938 8340 0 0 0.00% 0.00%
C 8938 8339 26 26 0.29% 0.31%
D 8939 8341 271 271 3.03% 3.25%

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 0 13 58322 262.94 1067 1043 217.8
A 13 254 13755 58.35 1067 1043 217.8
A 3 137 10598 43.86 1067 1043 217.8
B 0 230 61081 285.55 1064 1035 210.3
B 0 244 47837 222.56 1064 1035 210.3
B 12 111 26293 120.11 1064 1035 210.3
C 3 233 396409 1625.54 1017 1022 243.2
C 14 238 160492 655.62 1017 1022 243.2
C 2 16 65938 266.88 1017 1022 243.2
D 1 52 1526593 6237.6 1006 982 244.6
D 12 233 282151 1149.59 1006 982 244.6
D 7 80 266188 1084.32 1006 982 244.6

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