ASTROSAT CZTI

Data Quality Report

Orbit 39209

Creation date: 2024-06-27T22:01:49.425057
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_054T04_9000005446_39209cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39209cztM0_level2_quad_clean.evt
Size (bytes)1,184,227,200223,482,240
Size1.1 GB 213.1 MB
Events in quadrant A7,572,4211,582,340
Events in quadrant B6,960,3861,594,688
Events in quadrant C6,540,6431,536,207
Events in quadrant D21,635,1671,046,619

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0390
C0390
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321513
B0313573
C0293403
D0744603

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145711621.111797%
B145712261.551026%
C1457190.061767%
D14571455831.281312%

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 17287 14573 95 95 0.55% 0.65%
B 17287 14572 142 142 0.82% 0.97%
C 17287 14573 1 1 0.01% 0.01%
D 17287 14573 3909 3909 22.61% 26.82%

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 948810 2991.95 1566 1534 316.6
A 13 248 408525 1285.47 1566 1534 316.6
A 15 223 82397 255.4 1566 1534 316.6
B 5 172 591786 2006.24 1545 1503 294.2
B 0 221 132931 446.69 1545 1503 294.2
B 0 190 119243 400.17 1545 1503 294.2
C 15 214 594061 1687.28 1520 1525 351.2
C 0 10 15304 39.24 1520 1525 351.2
C 13 61 10415 25.31 1520 1525 351.2
D 12 235 15345352 46962.37 1336 1295 326.7
D 2 249 341986 1042.73 1336 1295 326.7
D 5 222 244858 745.45 1336 1295 326.7

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