ASTROSAT CZTI

Data Quality Report

Orbit 26277

Creation date: 2024-06-27T19:26:56.204619
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/AS1A09_079T03_9000003790_26277cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26277cztM0_level2_quad_clean.evt
Size (bytes)532,788,48096,128,640
Size508.1 MB 91.7 MB
Events in quadrant A3,561,696603,460
Events in quadrant B3,529,564621,822
Events in quadrant C4,434,093591,350
Events in quadrant D4,116,685588,398

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153530
B0151060
C0178680
D0172220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72612263.112519%
B72612052.823303%
C72615137.065143%
D72613164.352018%

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 7466 7262 19 19 0.25% 0.26%
B 7466 7262 0 0 0.00% 0.00%
C 7466 7262 151 151 2.02% 2.08%
D 7466 7262 159 159 2.13% 2.19%

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 13 190879 1074.79 873 854 176.8
A 13 254 11293 59.04 873 854 176.8
A 3 137 8193 41.51 873 854 176.8
B 5 172 34437 198.04 873 849 169.6
B 3 112 28226 161.42 873 849 169.6
B 7 219 26835 153.21 873 849 169.6
C 4 254 987831 5056.61 827 832 195.2
C 14 238 132080 672.41 827 832 195.2
C 3 233 56619 285.81 827 832 195.2
D 12 33 547899 2696.76 844 819 202.9
D 1 52 306866 1508.62 844 819 202.9
D 2 234 30674 147.17 844 819 202.9

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