ASTROSAT CZTI

Data Quality Report

Orbit 42025

Creation date: 2024-06-27T22:35:52.547533
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_006T12_9000005734_42025cztM0_level2.fits modeM0/AS1A12_006T12_9000005734_42025cztM0_level2_quad_clean.evt
Size (bytes)326,750,40087,595,200
Size311.6 MB 83.5 MB
Events in quadrant A3,020,317602,392
Events in quadrant B2,886,186615,303
Events in quadrant C2,411,250577,679
Events in quadrant D3,394,638512,055

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118792
B0116152
C099102
D0132882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4914581.180301%
B49141362.767603%
C491450.101750%
D49142134.334554%

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 7007 4915 40 40 0.57% 0.81%
B 7007 4915 69 69 0.98% 1.40%
C 7007 4915 0 0 0.00% 0.00%
D 7007 4915 165 165 2.35% 3.36%

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 506312 4308.02 578 568 117.4
A 15 223 246543 2095.26 578 568 117.4
A 12 189 11685 94.7 578 568 117.4
B 0 186 258766 2336.74 575 559 110.5
B 4 171 232469 2098.76 575 559 110.5
B 5 255 104496 940.62 575 559 110.5
C 15 214 208472 1586.97 561 564 131.0
C 8 79 7758 54.91 561 564 131.0
C 15 111 5153 35.03 561 564 131.0
D 2 249 614841 4594.85 548 533 133.7
D 1 52 358296 2675.97 548 533 133.7
D 13 249 146955 1095.2 548 533 133.7

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