ASTROSAT CZTI

Data Quality Report

Orbit 25491

Creation date: 2024-06-27T19:18:15.546170
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/AS1C05_012T07_9000003718_25491cztM0_level2.evt modeM0/AS1C05_012T07_9000003718_25491cztM0_level2_quad_clean.evt
Size (bytes)461,347,200135,169,920
Size440.0 MB 128.9 MB
Events in quadrant A3,165,108943,466
Events in quadrant B3,278,195950,121
Events in quadrant C3,128,172888,477
Events in quadrant D3,977,076876,924

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130100
B0133920
C0130240
D0158740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6238771.234370%
B62391302.083667%
C62391091.747075%
D6239891.426511%

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 7533 6239 0 0 0.00% 0.00%
B 7534 6240 11 11 0.15% 0.18%
C 7534 6240 0 0 0.00% 0.00%
D 7534 6240 33 33 0.44% 0.53%

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 9580 54.26 819 805 161.7
A 0 226 7182 39.43 819 805 161.7
A 3 137 6732 36.65 819 805 161.7
B 0 229 73549 486.46 803 783 149.6
B 3 64 47579 312.84 803 783 149.6
B 0 190 19192 123.07 803 783 149.6
C 14 238 125375 714.86 764 769 174.3
C 0 239 13569 73.43 764 769 174.3
C 3 233 8022 41.61 764 769 174.3
D 1 52 545174 2905.25 781 759 187.4
D 8 195 335814 1788.01 781 759 187.4
D 2 244 72181 381.14 781 759 187.4

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