ASTROSAT CZTI

Data Quality Report

Orbit 41625

Creation date: 2024-06-27T22:30:52.956335
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_035T02_9000005680_41625cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41625cztM0_level2_quad_clean.evt
Size (bytes)585,973,44091,932,480
Size558.8 MB 87.7 MB
Events in quadrant A3,374,724674,110
Events in quadrant B2,964,717694,387
Events in quadrant C3,367,256656,016
Events in quadrant D11,505,581329,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136572
B0130152
C0138152
D0383952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6156370.601040%
B6157260.422284%
C61571081.754101%
D6157321552.216989%

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 8841 6158 25 25 0.28% 0.41%
B 8842 6159 5 5 0.06% 0.08%
C 8842 6159 97 97 1.10% 1.57%
D 8842 6159 3012 3012 34.06% 48.90%

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 576858 4047.06 693 678 142.4
A 7 3 37647 259.67 693 678 142.4
A 13 248 37303 257.25 693 678 142.4
B 5 255 127672 940.82 687 669 135.0
B 0 186 113940 839.09 687 669 135.0
B 12 111 17148 122.07 687 669 135.0
C 0 10 327241 2092.84 669 674 156.0
C 15 214 269911 1725.43 669 674 156.0
C 0 15 157168 1002.91 669 674 156.0
D 12 79 8470249 62123.1 544 526 136.3
D 13 249 595939 4367.19 544 526 136.3
D 2 249 138883 1014.81 544 526 136.3

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