ASTROSAT CZTI

Data Quality Report

Orbit 38732

Creation date: 2024-06-27T21:55:43.385030
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_054T01_9000005392_38732cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38732cztM0_level2_quad_clean.evt
Size (bytes)507,939,84088,125,120
Size484.4 MB 84.0 MB
Events in quadrant A3,092,914645,427
Events in quadrant B2,563,333653,903
Events in quadrant C2,729,626626,299
Events in quadrant D9,977,807348,522

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128143
B0114392
C0116172
D0335862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5636591.046842%
B5636110.195174%
C5636150.266146%
D5636268447.622427%

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 8773 5638 35 35 0.40% 0.62%
B 8773 5638 4 4 0.05% 0.07%
C 8773 5638 4 4 0.05% 0.07%
D 8773 5638 2231 2231 25.43% 39.57%

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 397300 3037.35 638 625 130.6
A 0 8 128318 977.75 638 625 130.6
A 12 189 45503 343.63 638 625 130.6
B 4 171 33777 264.16 637 620 125.5
B 12 111 15766 120.67 637 620 125.5
B 11 111 14790 112.89 637 620 125.5
C 15 214 233562 1573.09 628 631 148.1
C 0 10 35365 234.57 628 631 148.1
C 15 208 9345 58.85 628 631 148.1
D 2 16 6660372 50258.56 535 518 132.5
D 12 235 410611 3094.76 535 518 132.5
D 2 250 277466 2089.99 535 518 132.5

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