ASTROSAT CZTI

Data Quality Report

Orbit 37568

Creation date: 2024-06-27T21:41:38.515729
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/AS1C07_001T11_9000005336_37568cztM0_level2.evt modeM0/AS1C07_001T11_9000005336_37568cztM0_level2_quad_clean.evt
Size (bytes)427,979,520104,880,960
Size408.2 MB 100.0 MB
Events in quadrant A2,891,039696,141
Events in quadrant B3,083,512707,453
Events in quadrant C2,786,107706,527
Events in quadrant D3,806,872661,347

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122593
B0130342
C0120022
D0155802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5794120.207111%
B5794671.156369%
C579490.155333%
D57942634.539178%

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 9137 5796 5 5 0.05% 0.09%
B 9137 5796 48 48 0.53% 0.83%
C 9137 5796 6 6 0.07% 0.10%
D 9137 5795 248 248 2.71% 4.28%

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 10 83 330536 2557.9 640 627 129.0
A 9 143 36315 276.7 640 627 129.0
A 12 189 27100 205.25 640 627 129.0
B 5 255 219641 1788.58 637 620 122.5
B 0 213 86568 701.87 637 620 122.5
B 5 200 66888 541.16 637 620 122.5
C 15 214 248682 1710.21 626 627 145.0
C 0 10 75034 513.0 626 627 145.0
C 14 254 15979 105.84 626 627 145.0
D 13 243 375225 2490.85 615 596 150.4
D 12 233 178250 1181.2 615 596 150.4
D 13 249 159901 1059.2 615 596 150.4

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