ASTROSAT CZTI

Data Quality Report

Orbit 08251

Creation date: 2024-06-27T15:29:59.690237
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/AS1G07_086T01_9000001142_08251cztM0_level2.evt modeM0/AS1G07_086T01_9000001142_08251cztM0_level2_quad_clean.evt
Size (bytes)254,692,80056,113,920
Size242.9 MB 53.5 MB
Events in quadrant A1,850,507363,300
Events in quadrant B2,056,866367,422
Events in quadrant C1,726,659361,029
Events in quadrant D1,828,500348,298

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0788163
B0842678
C0770851
D0801653

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36591353.689533%
B36561443.938731%
C36641233.356987%
D36631383.767404%

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 4902 3685 2 2 0.04% 0.05%
B 4902 3686 14 14 0.29% 0.38%
C 4902 3686 0 0 0.00% 0.00%
D 4902 3686 17 17 0.35% 0.46%

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 15 234 63345 669.56 461 452 93.9
A 8 15 5906 58.06 461 452 93.9
A 0 226 4490 42.99 461 452 93.9
B 10 16 98457 1117.7 459 449 87.7
B 0 214 97474 1106.49 459 449 87.7
B 11 51 60039 679.58 459 449 87.7
C 5 128 5317 47.89 441 444 101.7
C 13 61 3341 28.47 441 444 101.7
C 12 4 1281 8.23 441 444 101.7
D 13 105 68185 617.96 446 432 109.6
D 11 144 44952 406.05 446 432 109.6
D 2 14 14544 128.71 446 432 109.6

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