ASTROSAT CZTI

Data Quality Report

Orbit 07148

Creation date: 2024-06-27T15:16:09.947755
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/AS1G06_029T02_9000000974_07148cztM0_level2.evt modeM0/AS1G06_029T02_9000000974_07148cztM0_level2_quad_clean.evt
Size (bytes)914,063,040166,913,280
Size871.7 MB 159.2 MB
Events in quadrant A6,075,3101,053,023
Events in quadrant B6,070,6611,090,668
Events in quadrant C6,458,8431,056,918
Events in quadrant D8,235,652994,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265014
B0265863
C0278363
D0332733

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124431050.843848%
B124431130.908141%
C124432351.888612%
D124434513.624528%

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 15783 12445 35 35 0.22% 0.28%
B 15783 12443 4 4 0.03% 0.03%
C 15783 12444 153 153 0.97% 1.23%
D 15783 12445 268 268 1.70% 2.15%

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 13 248 245931 818.09 1477 1448 298.8
A 8 15 86222 283.67 1477 1448 298.8
A 15 174 53359 173.7 1477 1448 298.8
B 0 214 135344 473.23 1496 1458 282.9
B 0 219 98614 343.41 1496 1458 282.9
B 12 111 28976 97.26 1496 1458 282.9
C 4 254 859151 2614.6 1427 1439 328.0
C 10 22 14726 40.5 1427 1439 328.0
C 4 238 12872 34.85 1427 1439 328.0
D 2 216 1763677 5082.37 1409 1366 346.8
D 8 195 486334 1398.61 1409 1366 346.8
D 12 233 372506 1070.34 1409 1366 346.8

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