ASTROSAT CZTI

Data Quality Report

Orbit 25775

Creation date: 2024-06-27T19:21:19.565996
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_147T01_9000003754_25775cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25775cztM0_level2_quad_clean.evt
Size (bytes)583,692,48069,894,720
Size556.7 MB 66.7 MB
Events in quadrant A3,518,276432,540
Events in quadrant B3,394,863438,499
Events in quadrant C3,286,876416,115
Events in quadrant D7,027,931366,571

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147210
B0142920
C0139280
D0254380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6625721.086792%
B6625731.101887%
C6625851.283019%
D6625112917.041509%

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 7680 6625 2 2 0.03% 0.03%
B 7680 6625 0 0 0.00% 0.00%
C 7680 6625 0 0 0.00% 0.00%
D 7680 6625 1001 1001 13.03% 15.11%

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 200557 1171.88 852 834 170.4
A 0 143 17652 98.68 852 834 170.4
A 13 254 9916 53.29 852 834 170.4
B 0 190 33284 204.15 844 824 159.0
B 0 219 33249 203.93 844 824 159.0
B 12 111 18894 113.65 844 824 159.0
C 14 238 131037 700.57 807 815 185.9
C 3 233 5658 26.05 807 815 185.9
C 13 61 5459 24.98 807 815 185.9
D 1 52 2499969 13635.4 764 745 183.3
D 7 80 1330623 7255.62 764 745 183.3
D 8 195 196446 1067.71 764 745 183.3

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