ASTROSAT CZTI

Data Quality Report

Orbit 08556

Creation date: 2024-06-27T15:34:13.827396
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/AS1G07_060T01_9000001200_08556cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08556cztM0_level2_quad_clean.evt
Size (bytes)767,828,16070,862,400
Size732.3 MB 67.6 MB
Events in quadrant A3,084,096480,608
Events in quadrant B3,273,473488,260
Events in quadrant C3,040,612478,391
Events in quadrant D13,400,059228,637

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138623
B0142552
C0138462
D0444932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6720280.416667%
B6720650.967262%
C6720160.238095%
D6720468869.761905%

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 8980 6722 0 0 0.00% 0.00%
B 8980 6722 15 15 0.17% 0.22%
C 8980 6722 0 0 0.00% 0.00%
D 8980 6720 4398 4398 48.98% 65.45%

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 0 226 7460 41.09 798 780 162.6
A 12 194 7001 38.27 798 780 162.6
A 5 16 3967 19.6 798 780 162.6
B 4 81 67415 430.83 803 785 154.7
B 0 245 43076 273.46 803 785 154.7
B 10 252 24213 151.49 803 785 154.7
C 9 54 19487 103.85 774 779 180.2
C 13 61 5878 28.3 774 779 180.2
C 8 222 2877 11.65 774 779 180.2
D 4 95 11567138 100786.29 457 445 114.8
D 1 52 31980 274.78 457 445 114.8
D 2 14 18848 160.35 457 445 114.8

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