ASTROSAT CZTI

Data Quality Report

Orbit 41755

Creation date: 2024-06-27T22:32:28.542492
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_077T11_9000005696_41755cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41755cztM0_level2_quad_clean.evt
Size (bytes)510,770,88097,185,600
Size487.1 MB 92.7 MB
Events in quadrant A3,502,531666,209
Events in quadrant B3,428,039671,529
Events in quadrant C3,528,958628,702
Events in quadrant D7,970,344546,358

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142352
B0145312
C0143932
D0279542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6152621.007802%
B61521873.039662%
C61532393.884284%
D615384113.668129%

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 8926 6154 53 53 0.59% 0.86%
B 8926 6153 94 94 1.05% 1.53%
C 8927 6153 232 232 2.60% 3.77%
D 8927 6153 951 951 10.65% 15.46%

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 576381 4091.22 677 664 140.7
A 13 248 284148 2014.53 677 664 140.7
A 13 6 12069 81.05 677 664 140.7
B 5 255 620800 4727.53 666 647 131.2
B 0 245 55264 416.35 666 647 131.2
B 0 186 40957 307.29 666 647 131.2
C 0 10 760901 5038.14 642 645 150.9
C 15 214 260008 1718.77 642 645 150.9
C 14 67 5333 31.06 642 645 150.9
D 12 79 4413291 27604.46 635 617 159.9
D 2 249 835111 5220.36 635 617 159.9
D 13 249 114666 713.46 635 617 159.9

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