ASTROSAT CZTI

Data Quality Report

Orbit 19581

Creation date: 2024-06-27T18:04:26.749029
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_037T01_9000002912_19581cztM0_level2.evt modeM0/AS1T03_037T01_9000002912_19581cztM0_level2_quad_clean.evt
Size (bytes)487,117,440104,077,440
Size464.6 MB 99.3 MB
Events in quadrant A3,049,098683,345
Events in quadrant B3,241,729703,923
Events in quadrant C3,274,800671,455
Events in quadrant D4,746,963641,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132422
B0138012
C0136532
D0184022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6477220.339663%
B6476530.818406%
C6476771.189006%
D64763765.806053%

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 8637 6479 0 0 0.00% 0.00%
B 8636 6478 3 3 0.03% 0.05%
C 8636 6477 4 4 0.05% 0.06%
D 8636 6478 279 279 3.23% 4.31%

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 9337 53.79 791 774 159.2
A 0 226 6898 38.47 791 774 159.2
A 3 137 5999 32.82 791 774 159.2
B 4 216 50515 330.47 798 777 150.5
B 12 111 18144 115.39 798 777 150.5
B 15 32 17419 110.57 798 777 150.5
C 14 238 121941 671.03 777 783 180.6
C 3 233 70852 388.07 777 783 180.6
C 5 112 25613 137.52 777 783 180.6
D 1 52 985187 5349.76 764 744 184.0
D 13 104 338148 1833.55 764 744 184.0
D 2 16 194206 1051.33 764 744 184.0

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