ASTROSAT CZTI

Data Quality Report

Orbit 49841

Creation date: 2024-12-15T12:27:09.765898
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_037T01_9000006440_49841cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49841cztM0_level2_quad_clean.evt
Size (bytes)1,124,726,40048,139,200
Size1.0 GB 45.9 MB
Events in quadrant A11,833,882351,968
Events in quadrant B3,849,405656,874
Events in quadrant C11,833,06614,207
Events in quadrant D13,636,312492

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394231
B0157301
C0394431
D0447911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6215305249.106999%
B62163265.244530%
C6216610298.166023%
D6216621399.951737%

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 7340 6216 2624 2624 35.75% 42.21%
B 7341 6217 143 143 1.95% 2.30%
C 7340 6215 2324 2324 31.66% 37.39%
D 7340 6215 4477 4477 60.99% 72.04%

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 3 84 3687332 25787.93 558 543 143.0
A 4 4 3480078 24338.26 558 543 143.0
A 3 130 377543 2637.0 558 543 143.0
B 4 206 448117 3033.48 687 665 147.5
B 5 185 245721 1661.35 687 665 147.5
B 0 229 167801 1133.09 687 665 147.5
C 15 197 3052726 68362.97 128 125 44.7
C 1 44 2116527 47396.8 128 125 44.7
C 15 230 1670993 37419.07 128 125 44.7
D 7 61 3363303 89113.32 110 105 37.7
D 8 176 3175055 84125.39 110 105 37.7
D 7 126 2475163 65580.63 110 105 37.7

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