ASTROSAT CZTI

Data Quality Report

Orbit 39115

Creation date: 2024-06-27T22:00:36.795376
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_067T01_9000005432_39115cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39115cztM0_level2_quad_clean.evt
Size (bytes)393,134,40095,048,640
Size374.9 MB 90.6 MB
Events in quadrant A3,126,837656,875
Events in quadrant B2,432,814668,024
Events in quadrant C2,789,085619,508
Events in quadrant D5,796,727566,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126773
B0106532
C0116312
D0209952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5242290.553224%
B524280.152614%
C524270.133537%
D52421633.109500%

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 7365 5243 18 18 0.24% 0.34%
B 7365 5243 2 2 0.03% 0.04%
C 7365 5243 4 4 0.05% 0.08%
D 7365 5243 193 193 2.62% 3.68%

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 423618 3453.62 610 599 122.5
A 15 223 202113 1645.2 610 599 122.5
A 9 143 89886 728.96 610 599 122.5
B 5 184 27569 233.99 603 587 115.3
B 5 172 21059 177.54 603 587 115.3
B 12 111 14365 119.49 603 587 115.3
C 15 208 230141 1711.54 578 583 134.1
C 15 214 222416 1653.95 578 583 134.1
C 9 187 73369 542.68 578 583 134.1
D 12 235 1733112 12234.23 575 559 141.6
D 5 222 1570206 11083.89 575 559 141.6
D 12 233 99911 701.56 575 559 141.6

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