ASTROSAT CZTI

Data Quality Report

Orbit 23187

Creation date: 2024-06-27T18:51:03.056404
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_175T01_9000003428_23187cztM0_level2.evt modeM0/AS1T03_175T01_9000003428_23187cztM0_level2_quad_clean.evt
Size (bytes)323,948,16033,701,760
Size308.9 MB 32.1 MB
Events in quadrant A1,644,313203,617
Events in quadrant B1,799,729208,220
Events in quadrant C1,970,206200,887
Events in quadrant D4,195,138197,321

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068841
B073351
C077981
D0144541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2940772.619048%
B2940872.959184%
C29401665.646259%
D2940132545.068027%

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 4215 2940 0 0 0.00% 0.00%
B 4215 2940 0 0 0.00% 0.00%
C 4215 2940 36 36 0.85% 1.22%
D 4215 2940 975 975 23.13% 33.16%

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 13 254 4442 46.55 426 417 86.5
A 0 226 3809 39.23 426 417 86.5
A 3 137 3559 36.34 426 417 86.5
B 0 229 70438 875.71 423 413 80.0
B 0 190 67924 844.27 423 413 80.0
B 0 245 9021 107.65 423 413 80.0
C 0 10 169426 1788.2 409 414 94.5
C 8 208 79968 841.71 409 414 94.5
C 14 238 64956 682.87 409 414 94.5
D 1 52 2281844 27699.03 341 331 82.4
D 7 238 397589 4822.97 341 331 82.4
D 13 153 183569 2224.63 341 331 82.4

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