ASTROSAT CZTI

Data Quality Report

Orbit 20240809_A13_062T02_9000006384_level2

Creation date: 2024-08-16T17:25:27.441010
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/AS1A13_062T02_9000006384cztM0_level2.fits modeM0/AS1A13_062T02_9000006384cztM0_level2_quad_clean.evt
Size (bytes)2,440,333,4402,660,503,680
Size2.3 GB 2.5 GB
Events in quadrant A13,909,15615,640,280
Events in quadrant B14,086,30416,648,784
Events in quadrant C14,532,69615,650,062
Events in quadrant D12,312,53413,591,683

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056540
B056520
C056480
D056480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010984590
B05828820
C06012240
D07151570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03190
C03190
D03190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A277984192216.914427%
B27810942131.514874%
C27809438971.401325%
D278094143965.176667%

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 329318 278142 0 0 0.00% 0.00%
B 329318 278314 0 0 0.00% 0.00%
C 329318 278277 0 0 0.00% 0.00%
D 329318 278245 0 0 0.00% 0.00%

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 7 110 11452 8.76 3612 3359 924.0
A 15 236 11261 8.55 3612 3359 924.0
A 14 95 10528 7.76 3612 3359 924.0
B 2 9 13621 13.91 3717 3521 726.0
B 2 8 10946 10.23 3717 3521 726.0
B 3 17 10286 9.32 3717 3521 726.0
C 3 202 11185 7.73 3846 3574 984.3
C 1 81 11067 7.61 3846 3574 984.3
C 3 203 10839 7.38 3846 3574 984.3
D 10 189 9205 6.1 3535 3203 984.1
D 10 113 8835 5.72 3535 3203 984.1
D 15 47 8827 5.71 3535 3203 984.1

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