ASTROSAT CZTI

Data Quality Report

Orbit 38899

Creation date: 2024-06-27T21:57:55.120862
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/AS1T05_064T01_9000005416_38899cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38899cztM0_level2_quad_clean.evt
Size (bytes)387,947,52084,654,720
Size370.0 MB 80.7 MB
Events in quadrant A2,599,576579,126
Events in quadrant B2,273,398598,078
Events in quadrant C2,484,955576,054
Events in quadrant D6,600,051448,122

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109333
B0104482
C0106792
D0232222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517190.174048%
B5171120.232063%
C5171300.580159%
D517198118.971185%

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 7114 5172 5 5 0.07% 0.10%
B 7114 5172 4 4 0.06% 0.08%
C 7114 5172 19 19 0.27% 0.37%
D 7114 5172 1027 1027 14.44% 19.86%

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 408313 3555.33 561 548 114.7
A 13 248 11178 92.68 561 548 114.7
A 13 254 7792 63.16 561 548 114.7
B 5 172 26838 243.42 563 548 108.0
B 0 230 14249 126.86 563 548 108.0
B 12 111 13583 120.69 563 548 108.0
C 15 214 211443 1652.7 552 554 127.6
C 14 254 51528 399.47 552 554 127.6
C 0 10 30320 233.27 552 554 127.6
D 12 227 2304921 17874.45 519 503 128.9
D 2 16 764375 5925.05 519 503 128.9
D 12 235 407249 3154.97 519 503 128.9

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