ASTROSAT CZTI

Data Quality Report

Orbit 12958

Creation date: 2024-06-27T16:34:24.678708
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/AS1G08_043T01_9000001902_12958cztM0_level2.evt modeM0/AS1G08_043T01_9000001902_12958cztM0_level2_quad_clean.evt
Size (bytes)319,095,36049,956,480
Size304.3 MB 47.6 MB
Events in quadrant A2,098,477315,151
Events in quadrant B3,323,414272,458
Events in quadrant C1,882,047313,942
Events in quadrant D2,059,872301,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090170
B0128090
C087970
D092030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A439330.068290%
B439357613.111769%
C439330.068290%
D439390.204871%

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 4393 4393 0 0 0.00% 0.00%
B 4393 4393 331 331 7.53% 7.53%
C 4393 4393 0 0 0.00% 0.00%
D 4393 4393 8 8 0.18% 0.18%

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 12 189 67449 657.65 495 483 101.8
A 1 162 56725 552.33 495 483 101.8
A 1 178 24373 234.62 495 483 101.8
B 4 239 1006244 11501.38 455 444 87.5
B 3 64 294235 3359.52 455 444 87.5
B 0 85 224007 2556.46 455 444 87.5
C 13 61 3540 27.29 482 483 112.0
C 8 222 2203 15.35 482 483 112.0
C 14 234 1611 10.07 482 483 112.0
D 8 195 154960 1313.29 478 464 117.6
D 1 52 42714 359.15 478 464 117.6
D 2 234 18844 156.24 478 464 117.6

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