ASTROSAT CZTI

Data Quality Report

Orbit 42352

Creation date: 2024-06-27T22:39:20.083966
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_102T01_9000005798_42352cztM0_level2.fits modeM0/AS1A12_102T01_9000005798_42352cztM0_level2_quad_clean.evt
Size (bytes)912,271,680254,531,520
Size870.0 MB 242.7 MB
Events in quadrant A8,267,3921,694,931
Events in quadrant B7,308,3341,728,130
Events in quadrant C7,360,1881,682,862
Events in quadrant D9,592,5711,496,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343024
B0333204
C0324354
D0398525

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16005310.193689%
B16005920.574820%
C16005160.099969%
D160054492.805373%

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 21495 16009 9 9 0.04% 0.06%
B 21495 16009 42 42 0.20% 0.26%
C 21495 16009 5 5 0.02% 0.03%
D 21495 16009 419 419 1.95% 2.62%

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 1466537 4172.7 1733 1695 351.1
A 7 3 45430 124.58 1733 1695 351.1
A 13 248 27548 73.64 1733 1695 351.1
B 4 81 188938 572.18 1714 1662 327.3
B 5 172 150559 454.92 1714 1662 327.3
B 3 112 80491 240.85 1714 1662 327.3
C 15 214 658672 1673.97 1692 1698 392.5
C 15 111 69031 171.56 1692 1698 392.5
C 7 247 25471 60.57 1692 1698 392.5
D 5 222 1069061 2619.71 1677 1626 407.5
D 12 6 779749 1909.67 1677 1626 407.5
D 1 52 412373 1008.06 1677 1626 407.5

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