ASTROSAT CZTI

Data Quality Report

Orbit 20160118_G02_049T01_9000000280_level2

Creation date: 2025-10-25T22:42:27.578893
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/AS1G02_049T01_9000000280cztM0_level2.fits modeM0/AS1G02_049T01_9000000280cztM0_level2_quad_clean.evt
Size (bytes)1,242,213,1201,797,615,360
Size1.2 GB 1.7 GB
Events in quadrant A7,197,65811,581,397
Events in quadrant B7,042,68811,551,206
Events in quadrant C7,065,75810,986,989
Events in quadrant D6,145,33410,162,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06345930
B07064160
C06167520
D06021350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02090
C02160
D02100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027140
B027080
C027020
D027060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1494705840.390714%
B14947016131.079146%
C1495094180.279582%
D1494879620.643534%

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 183671 149600 0 0 0.00% 0.00%
B 183670 149600 0 0 0.00% 0.00%
C 183671 149646 0 0 0.00% 0.00%
D 183671 149602 0 0 0.00% 0.00%

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 0 29 6796 11.62 1864 1736 435.5
A 7 110 6258 10.38 1864 1736 435.5
A 9 19 5198 7.95 1864 1736 435.5
B 2 9 5685 11.77 1862 1772 332.5
B 5 128 4543 8.33 1862 1772 332.5
B 14 254 4479 8.14 1862 1772 332.5
C 12 241 4867 7.03 1863 1719 447.7
C 9 242 4560 6.34 1863 1719 447.7
C 2 191 4552 6.33 1863 1719 447.7
D 1 19 4570 7.19 1752 1604 412.3
D 11 82 4366 6.7 1752 1604 412.3
D 6 44 4320 6.59 1752 1604 412.3

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