ASTROSAT CZTI

Data Quality Report

Orbit 28707

Creation date: 2024-06-27T19:55:13.903335
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/AS1A10_123T03_9000004120_28707cztM0_level2.evt modeM0/AS1A10_123T03_9000004120_28707cztM0_level2_quad_clean.evt
Size (bytes)276,229,44042,062,400
Size263.4 MB 40.1 MB
Events in quadrant A1,875,698263,693
Events in quadrant B1,796,251264,602
Events in quadrant C1,804,103251,938
Events in quadrant D2,657,540252,442

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076551
B073671
C073681
D0102791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33931083.183024%
B33931002.947244%
C33931865.481874%
D33931855.452402%

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 3982 3392 23 23 0.58% 0.68%
B 3983 3393 9 9 0.23% 0.27%
C 3983 3393 0 0 0.00% 0.00%
D 3983 3393 63 63 1.58% 1.86%

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 15 174 135884 1498.41 444 435 90.4
A 5 98 19396 209.76 444 435 90.4
A 13 254 6042 62.03 444 435 90.4
B 4 80 72563 833.16 437 425 86.6
B 12 111 10612 117.65 437 425 86.6
B 11 111 9713 107.27 437 425 86.6
C 14 238 91477 918.45 419 422 99.1
C 14 254 38186 380.91 419 422 99.1
C 10 22 35917 358.03 419 422 99.1
D 1 52 512284 4994.9 423 410 102.5
D 8 195 369108 3597.78 423 410 102.5
D 12 233 75405 731.81 423 410 102.5

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