ASTROSAT CZTI

Data Quality Report

Orbit 37228

Creation date: 2024-06-27T21:37:09.247697
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/AS1A11_079T01_9000005284_37228cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37228cztM0_level2_quad_clean.evt
Size (bytes)219,951,36023,307,840
Size209.8 MB 22.2 MB
Events in quadrant A1,580,925121,162
Events in quadrant B1,596,330124,165
Events in quadrant C1,660,255119,992
Events in quadrant D1,607,391115,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066871
B067471
C068161
D069971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A315940.126622%
B3159250.791390%
C3159290.918012%
D3159170.538145%

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 4800 3160 5 5 0.10% 0.16%
B 4800 3160 15 15 0.31% 0.47%
C 4800 3160 26 26 0.54% 0.82%
D 4800 3160 8 8 0.17% 0.25%

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 83 143574 1917.42 362 356 74.7
A 15 237 15550 203.42 362 356 74.7
A 13 248 7283 92.74 362 356 74.7
B 0 155 77935 1084.86 362 353 71.5
B 0 213 33513 463.69 362 353 71.5
B 0 230 25338 349.38 362 353 71.5
C 15 214 133788 1602.49 351 354 83.3
C 0 10 70509 842.54 351 354 83.3
C 8 79 34534 410.49 351 354 83.3
D 12 248 65506 754.95 349 340 86.3
D 2 249 48008 552.24 349 340 86.3
D 13 249 42966 493.82 349 340 86.3

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