ASTROSAT CZTI

Data Quality Report

Orbit 38016

Creation date: 2024-06-27T21:47:21.405438
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/AS1A11_082T01_9000005356_38016cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38016cztM0_level2_quad_clean.evt
Size (bytes)366,825,60089,881,920
Size349.8 MB 85.7 MB
Events in quadrant A2,762,285612,651
Events in quadrant B3,423,807612,174
Events in quadrant C2,612,895622,704
Events in quadrant D4,374,968509,941

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112713
B0134952
C0107922
D0163782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5197120.230902%
B51972354.521840%
C5197110.211661%
D519759411.429671%

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 7019 5198 5 5 0.07% 0.10%
B 7019 5198 171 171 2.44% 3.29%
C 7019 5198 6 6 0.09% 0.12%
D 7019 5198 529 529 7.54% 10.18%

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 392827 3235.19 597 587 121.2
A 12 189 15207 120.59 597 587 121.2
A 13 6 14954 118.5 597 587 121.2
B 4 171 404469 3599.12 586 572 112.2
B 5 255 197163 1751.82 586 572 112.2
B 5 184 185745 1650.07 586 572 112.2
C 15 214 223752 1655.08 584 589 134.8
C 1 23 36496 266.3 584 589 134.8
C 15 159 31591 229.93 584 589 134.8
D 10 199 948665 7055.28 548 533 134.4
D 1 52 837631 6229.05 548 533 134.4
D 13 171 102551 759.14 548 533 134.4

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