ASTROSAT CZTI

Data Quality Report

Orbit 38668

Creation date: 2024-06-27T21:54:53.251264
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/AS1A12_054T01_9000005392_38668cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38668cztM0_level2_quad_clean.evt
Size (bytes)443,183,04086,437,440
Size422.7 MB 82.4 MB
Events in quadrant A2,869,023622,293
Events in quadrant B2,579,256631,557
Events in quadrant C2,863,216590,433
Events in quadrant D7,670,171391,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116333
B0112552
C0117802
D0264952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544170.128653%
B5441190.349201%
C5441711.304907%
D5441184733.945966%

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 7144 5442 3 3 0.04% 0.06%
B 7144 5442 7 7 0.10% 0.13%
C 7144 5442 71 71 0.99% 1.30%
D 7144 5442 1865 1865 26.11% 34.27%

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 409386 3237.56 618 605 126.3
A 13 248 45659 356.83 618 605 126.3
A 9 143 10450 77.97 618 605 126.3
B 0 189 90701 758.18 611 595 118.8
B 5 200 43151 358.08 611 595 118.8
B 12 111 14995 121.17 611 595 118.8
C 15 214 221393 1573.81 598 601 140.3
C 5 250 135389 960.77 598 601 140.3
C 15 208 112872 800.27 598 601 140.3
D 9 49 3669364 27934.7 525 509 131.3
D 12 227 830116 6316.64 525 509 131.3
D 5 222 337268 2564.09 525 509 131.3

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