ASTROSAT CZTI

Data Quality Report

Orbit 46764

Creation date: 2024-06-27T23:27:21.060658
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_053T01_9000006266_46764cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46764cztM0_level2_quad_clean.evt
Size (bytes)531,311,04099,665,280
Size506.7 MB 95.0 MB
Events in quadrant A9,283,464585,290
Events in quadrant B3,230,575725,607
Events in quadrant C2,861,263677,681
Events in quadrant D3,829,326612,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317671
B0135431
C0127501
D0154052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5970129121.624791%
B5970841.407035%
C5971631.055100%
D59702394.003350%

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 7220 5970 1061 1061 14.70% 17.77%
B 7220 5971 16 16 0.22% 0.27%
C 7221 5972 38 38 0.53% 0.64%
D 7221 5972 202 202 2.80% 3.38%

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 9 191 3137271 24176.34 632 620 129.7
A 10 83 2829736 21805.95 632 620 129.7
A 15 235 807764 6221.22 632 620 129.7
B 3 112 212534 1611.43 678 659 131.5
B 4 171 188235 1426.62 678 659 131.5
B 15 201 57200 430.03 678 659 131.5
C 14 254 239224 1562.38 658 663 152.7
C 15 208 31168 199.78 658 663 152.7
C 3 233 20078 127.15 658 663 152.7
D 1 52 478404 2985.47 652 633 160.0
D 13 249 260155 1621.69 652 633 160.0
D 13 138 208153 1296.74 652 633 160.0

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