ASTROSAT CZTI

Data Quality Report

Orbit 23464

Creation date: 2024-06-27T18:54:40.682705
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_100T02_9000003470_23464cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23464cztM0_level2_quad_clean.evt
Size (bytes)569,289,600101,756,160
Size542.9 MB 97.0 MB
Events in quadrant A3,360,664693,158
Events in quadrant B3,136,171713,669
Events in quadrant C3,195,992683,145
Events in quadrant D7,153,386583,878

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133081
B0126411
C0129421
D0252191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58292033.482587%
B5830470.806175%
C58301011.732419%
D5830127621.886792%

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 7174 5830 113 113 1.58% 1.94%
B 7175 5831 1 1 0.01% 0.02%
C 7175 5831 1 1 0.01% 0.02%
D 7175 5830 1203 1203 16.77% 20.63%

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 15 174 308912 1986.42 784 770 155.1
A 6 16 27627 173.13 784 770 155.1
A 13 254 9760 57.95 784 770 155.1
B 12 111 15814 104.25 784 766 144.3
B 0 228 14620 95.98 784 766 144.3
B 0 229 14576 95.68 784 766 144.3
C 14 238 121673 684.48 766 774 176.6
C 3 233 54510 304.23 766 774 176.6
C 0 10 13558 72.38 766 774 176.6
D 7 238 2251074 13069.74 721 702 172.2
D 1 52 1981789 11505.78 721 702 172.2
D 13 104 69109 397.3 721 702 172.2

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