ASTROSAT CZTI

Data Quality Report

Orbit 42910

Creation date: 2024-06-27T22:45:42.354335
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_143T01_9000005830_42910cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42910cztM0_level2_quad_clean.evt
Size (bytes)347,120,64082,863,360
Size331.0 MB 79.0 MB
Events in quadrant A3,011,957563,789
Events in quadrant B2,178,933586,778
Events in quadrant C2,473,639562,280
Events in quadrant D4,805,078454,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119972
B099833
C0104402
D0177732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48721062.175698%
B487190.184767%
C4871200.410593%
D487172014.781359%

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 7026 4873 90 90 1.28% 1.85%
B 7025 4871 3 3 0.04% 0.06%
C 7025 4872 18 18 0.26% 0.37%
D 7025 4872 735 735 10.46% 15.09%

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 550783 5076.37 522 511 108.4
A 15 237 354710 3267.55 522 511 108.4
A 2 79 70140 642.34 522 511 108.4
B 4 171 48993 478.28 530 515 101.4
B 3 112 18342 175.88 530 515 101.4
B 5 172 16593 158.63 530 515 101.4
C 15 214 198521 1611.21 525 528 122.9
C 14 254 111604 903.91 525 528 122.9
C 12 2 75837 612.84 525 528 122.9
D 1 47 909678 7569.57 489 475 120.1
D 10 118 523371 4353.37 489 475 120.1
D 12 6 478378 3978.78 489 475 120.1

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