ASTROSAT CZTI

Data Quality Report

Orbit 27130

Creation date: 2024-06-27T19:36:50.427411
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/AS1T03_244T01_9000003912_27130cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27130cztM0_level2_quad_clean.evt
Size (bytes)959,466,240150,560,640
Size915.0 MB 143.6 MB
Events in quadrant A7,238,004945,451
Events in quadrant B6,160,199970,443
Events in quadrant C5,922,109929,085
Events in quadrant D8,918,056876,331

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294570
B0258930
C0253750
D0349510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121241291.064005%
B121241170.965028%
C121241351.113494%
D121246355.237545%

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 13079 12127 60 60 0.46% 0.49%
B 13079 12127 14 14 0.11% 0.12%
C 13079 12127 5 5 0.04% 0.04%
D 13079 12127 450 450 3.44% 3.71%

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 6 16 949494 3245.66 1458 1423 292.1
A 14 235 608046 2076.74 1458 1423 292.1
A 12 189 27901 90.65 1458 1423 292.1
B 3 112 142191 504.87 1463 1423 278.8
B 3 64 93923 331.75 1463 1423 278.8
B 10 245 70669 248.35 1463 1423 278.8
C 14 238 227015 678.22 1417 1426 332.6
C 15 208 76345 225.24 1417 1426 332.6
C 3 233 49611 144.87 1417 1426 332.6
D 1 52 2803486 7845.51 1385 1357 357.2
D 7 38 371135 1035.32 1385 1357 357.2
D 2 250 320031 892.24 1385 1357 357.2

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