ASTROSAT CZTI

Data Quality Report

Orbit 46419

Creation date: 2024-06-27T23:22:59.414041
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_033T03_9000006206_46419cztM0_level2.fits modeM0/AS1A13_033T03_9000006206_46419cztM0_level2_quad_clean.evt
Size (bytes)511,326,720114,482,880
Size487.6 MB 109.2 MB
Events in quadrant A6,513,098757,755
Events in quadrant B3,430,063799,598
Events in quadrant C4,413,709722,439
Events in quadrant D4,021,871694,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236572
B0149482
C0179802
D0168772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70683595.079230%
B70682072.928693%
C70675527.810952%
D70672954.174331%

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 7798 7068 1 1 0.01% 0.01%
B 7798 7068 5 5 0.06% 0.07%
C 7797 7068 275 275 3.53% 3.89%
D 7797 7068 145 145 1.86% 2.05%

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 3117392 18064.26 830 812 172.5
A 0 247 133054 766.5 830 812 172.5
A 2 247 31384 177.2 830 812 172.5
B 0 190 51732 302.96 835 809 168.1
B 0 245 34732 201.82 835 809 168.1
B 5 171 22421 128.58 835 809 168.1
C 14 254 1284164 6900.78 788 794 186.0
C 3 233 28163 147.17 788 794 186.0
C 9 54 17099 87.67 788 794 186.0
D 13 249 379481 1855.12 822 798 204.1
D 0 240 332762 1626.25 822 798 204.1
D 2 249 112418 546.81 822 798 204.1

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