ASTROSAT CZTI

Data Quality Report

Orbit 14157

Creation date: 2024-06-27T16:51:11.723960
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_045T01_9000002092_14157cztM0_level2.evt modeM0/AS1G08_045T01_9000002092_14157cztM0_level2_quad_clean.evt
Size (bytes)557,804,16076,317,120
Size532.0 MB 72.8 MB
Events in quadrant A3,238,185484,828
Events in quadrant B4,761,370493,741
Events in quadrant C3,473,997462,945
Events in quadrant D4,994,059430,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134553
B0180412
C0141332
D0192172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62891021.621879%
B62894977.902687%
C6289510.810940%
D62892814.468119%

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 7530 6291 0 0 0.00% 0.00%
B 7530 6291 208 208 2.76% 3.31%
C 7530 6291 0 0 0.00% 0.00%
D 7530 6291 226 226 3.00% 3.59%

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 8334 44.73 836 820 168.0
A 0 226 7569 40.18 836 820 168.0
A 12 194 6285 32.53 836 820 168.0
B 0 85 1421625 9174.4 822 806 154.9
B 0 228 40395 255.63 822 806 154.9
B 3 209 25430 159.0 822 806 154.9
C 3 233 327666 1786.29 799 805 183.0
C 0 207 29378 156.15 799 805 183.0
C 13 61 5819 27.4 799 805 183.0
D 1 52 685291 3670.23 784 765 186.5
D 15 0 539391 2887.95 784 765 186.5
D 8 195 524784 2809.64 784 765 186.5

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