ASTROSAT CZTI

Data Quality Report

Orbit 39936

Creation date: 2024-06-27T22:10:18.359817
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_032T02_9000005510_39936cztM0_level2.fits modeM0/AS1A12_032T02_9000005510_39936cztM0_level2_quad_clean.evt
Size (bytes)201,441,60054,400,320
Size192.1 MB 51.9 MB
Events in quadrant A1,717,238370,551
Events in quadrant B1,701,527371,762
Events in quadrant C2,036,648336,938
Events in quadrant D1,735,895327,166

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0815
B0855
C0859
D0838

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086701377
B090601601
C099691899
D092351583

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A340930.088002%
B3377682.013622%
C33432106.281783%
D3356300.893921%

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 5815 3697 0 0 0.00% 0.00%
B 5816 3645 50 50 0.86% 1.37%
C 5814 3591 180 180 3.10% 5.01%
D 5815 3627 31 31 0.53% 0.85%

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 244978 3213.82 367 361 76.1
A 13 248 23967 310.14 367 361 76.1
A 7 192 12432 158.59 367 361 76.1
B 4 170 127283 1771.27 361 350 71.7
B 5 255 68427 949.97 361 350 71.7
B 0 230 32569 449.6 361 350 71.7
C 9 54 543893 6580.93 346 348 82.6
C 15 214 131995 1593.9 346 348 82.6
C 0 10 6911 79.46 346 348 82.6
D 12 227 117180 1330.33 355 345 87.8
D 2 249 86405 979.92 355 345 87.8
D 1 47 56059 634.38 355 345 87.8

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