ASTROSAT CZTI

Data Quality Report

Orbit 39887

Creation date: 2024-06-27T22:09:55.888546
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_032T03_9000005502_39887cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39887cztM0_level2_quad_clean.evt
Size (bytes)434,134,08092,851,200
Size414.0 MB 88.5 MB
Events in quadrant A4,599,358560,580
Events in quadrant B3,455,431647,770
Events in quadrant C2,907,351635,242
Events in quadrant D4,648,773554,997

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172483
B0142762
C0122532
D0177392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A590287114.757709%
B59021452.456794%
C5902120.203321%
D59024587.760081%

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 7185 5903 432 432 6.01% 7.32%
B 7185 5903 57 57 0.79% 0.97%
C 7185 5903 8 8 0.11% 0.14%
D 7185 5903 437 437 6.08% 7.40%

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 14 250 1680705 13638.9 593 579 123.2
A 10 83 510587 4140.14 593 579 123.2
A 6 10 58563 470.7 593 579 123.2
B 0 183 279857 2241.77 643 625 124.6
B 0 221 160258 1281.59 643 625 124.6
B 4 141 121564 970.94 643 625 124.6
C 15 214 247900 1654.22 635 640 149.5
C 14 254 50745 335.21 635 640 149.5
C 15 159 33705 221.21 635 640 149.5
D 12 227 1344761 8817.94 614 596 152.4
D 12 233 262315 1716.92 614 596 152.4
D 1 52 146033 954.09 614 596 152.4

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