ASTROSAT CZTI

Data Quality Report

Orbit 41651

Creation date: 2024-06-27T22:31:10.743763
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/AS1T05_116T01_9000005682_41651cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41651cztM0_level2_quad_clean.evt
Size (bytes)306,178,56083,658,240
Size292.0 MB 79.8 MB
Events in quadrant A2,633,372562,931
Events in quadrant B2,337,150575,104
Events in quadrant C2,799,114539,711
Events in quadrant D3,169,143500,740

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109982
B0106152
C0116222
D0130622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5064130.256714%
B5064340.671406%
C50632013.969978%
D50632324.582263%

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 7037 5065 4 4 0.06% 0.08%
B 7037 5065 14 14 0.20% 0.28%
C 7036 5064 199 199 2.83% 3.93%
D 7036 5064 221 221 3.14% 4.36%

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 510154 4606.94 539 528 110.6
A 3 1 14212 123.7 539 528 110.6
A 2 79 9812 83.93 539 528 110.6
B 4 81 73756 708.36 538 521 103.4
B 5 255 51063 488.86 538 521 103.4
B 7 202 50464 483.07 538 521 103.4
C 0 10 563730 4597.18 520 522 122.5
C 15 214 202521 1648.81 520 522 122.5
C 14 254 5695 42.22 520 522 122.5
D 13 249 729922 5735.91 520 506 127.2
D 1 47 122693 960.84 520 506 127.2
D 2 249 95800 749.36 520 506 127.2

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