ASTROSAT CZTI

Data Quality Report

Orbit 25241

Creation date: 2024-06-27T19:15:23.982875
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/AS1A07_097T01_9000003692_25241cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25241cztM0_level2_quad_clean.evt
Size (bytes)549,118,08085,201,920
Size523.7 MB 81.3 MB
Events in quadrant A3,252,732555,856
Events in quadrant B3,267,387555,966
Events in quadrant C5,643,696504,130
Events in quadrant D4,036,532521,512

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133610
B0133630
C0208660
D0161580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6343590.930159%
B6344691.087642%
C634480412.673392%
D63441282.017654%

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 7463 6344 0 0 0.00% 0.00%
B 7464 6345 0 0 0.00% 0.00%
C 7464 6345 477 477 6.39% 7.52%
D 7464 6345 59 59 0.79% 0.93%

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 3 1 12963 72.56 841 826 167.3
A 13 254 8757 47.42 841 826 167.3
A 0 226 7272 38.54 841 826 167.3
B 0 190 22158 136.83 822 805 156.1
B 12 111 18795 115.28 822 805 156.1
B 10 251 17250 105.38 822 805 156.1
C 0 239 2269384 12845.21 756 763 176.6
C 7 247 192713 1086.84 756 763 176.6
C 14 238 123329 693.98 756 763 176.6
D 8 195 432468 2216.77 808 785 194.7
D 10 70 258406 1322.93 808 785 194.7
D 2 244 143407 732.39 808 785 194.7

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