ASTROSAT CZTI

Data Quality Report

Orbit 22387

Creation date: 2024-06-27T18:40:09.074672
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_007T04_9000003310_22387cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22387cztM0_level2_quad_clean.evt
Size (bytes)443,010,24091,566,720
Size422.5 MB 87.3 MB
Events in quadrant A2,875,335602,920
Events in quadrant B2,995,007602,908
Events in quadrant C2,905,032578,607
Events in quadrant D4,220,531556,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127391
B0129721
C0126771
D0167991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6187380.614191%
B6188530.856496%
C6188761.228184%
D61883215.187460%

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 7152 6188 0 0 0.00% 0.00%
B 7153 6188 1 1 0.01% 0.02%
C 7153 6189 0 0 0.00% 0.00%
D 7153 6188 275 275 3.84% 4.44%

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 8692 52.59 745 727 151.4
A 3 137 6464 37.88 745 727 151.4
A 0 226 6432 37.67 745 727 151.4
B 0 190 44552 310.85 740 721 141.0
B 0 228 22691 155.81 740 721 141.0
B 12 111 16847 114.37 740 721 141.0
C 14 238 113254 668.68 715 718 168.3
C 13 61 5045 25.71 715 718 168.3
C 10 22 4092 20.05 715 718 168.3
D 1 52 1290621 7404.45 720 700 174.2
D 7 38 58909 334.13 720 700 174.2
D 12 227 57910 328.4 720 700 174.2

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