ASTROSAT CZTI

Data Quality Report

Orbit 40770

Creation date: 2024-06-27T22:20:15.962357
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/AS1C07_001T10_9000005566_40770cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40770cztM0_level2_quad_clean.evt
Size (bytes)383,745,60091,388,160
Size366.0 MB 87.2 MB
Events in quadrant A3,214,516619,212
Events in quadrant B2,776,747648,203
Events in quadrant C3,104,692617,310
Events in quadrant D4,656,904476,350

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129103
B0122772
C0128662
D0178162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5800460.793103%
B5800280.482759%
C5800130.224138%
D5800110519.051724%

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 5801 37 37 0.52% 0.64%
B 7114 5801 9 9 0.13% 0.16%
C 7114 5801 11 11 0.15% 0.19%
D 7114 5801 373 373 5.24% 6.43%

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 502129 3914.5 628 613 128.1
A 12 189 132458 1029.09 628 613 128.1
A 13 248 123107 956.1 628 613 128.1
B 0 190 111589 905.38 628 609 122.6
B 0 229 68778 556.13 628 609 122.6
B 5 255 66989 541.53 628 609 122.6
C 9 187 287974 1999.55 617 622 143.7
C 15 214 247365 1716.97 617 622 143.7
C 14 254 88617 612.32 617 622 143.7
D 12 227 1107555 7913.2 562 545 139.9
D 2 249 697868 4984.65 562 545 139.9
D 2 153 269626 1923.46 562 545 139.9

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