ASTROSAT CZTI

Data Quality Report

Orbit 22771

Creation date: 2024-06-27T18:45:32.457329
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_168T01_9000003368_22771cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22771cztM0_level2_quad_clean.evt
Size (bytes)215,614,08057,576,960
Size205.6 MB 54.9 MB
Events in quadrant A1,455,461396,083
Events in quadrant B1,489,488400,027
Events in quadrant C1,420,671380,350
Events in quadrant D1,972,196367,127

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059451
B060551
C058951
D076681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2802732.605282%
B2802782.783726%
C28021003.568879%
D28021836.531049%

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 3742 2803 0 0 0.00% 0.00%
B 3742 2803 1 1 0.03% 0.04%
C 3742 2803 0 0 0.00% 0.00%
D 3742 2803 90 90 2.41% 3.21%

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 17 42232 560.59 366 358 74.7
A 13 254 4969 61.73 366 358 74.7
A 0 226 3313 39.56 366 358 74.7
B 0 190 36402 521.06 361 352 69.2
B 0 228 18573 263.36 361 352 69.2
B 0 230 16494 233.32 361 352 69.2
C 14 238 55858 677.6 349 350 81.9
C 13 61 2532 26.64 349 350 81.9
C 0 10 2442 25.54 349 350 81.9
D 1 52 574390 6642.29 350 340 86.4
D 2 152 24955 284.82 350 340 86.4
D 7 238 15581 176.35 350 340 86.4

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