ASTROSAT CZTI

Data Quality Report

Orbit 42511

Creation date: 2024-06-27T22:41:02.958224
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/AS1C07_001T10_9000005806_42511cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42511cztM0_level2_quad_clean.evt
Size (bytes)624,896,640106,280,640
Size595.9 MB 101.4 MB
Events in quadrant A3,639,681751,566
Events in quadrant B3,781,799745,591
Events in quadrant C9,689,717598,301
Events in quadrant D5,469,959628,217

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153972
B0163872
C0337832
D0213702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7101150.211238%
B7101841.182932%
C7101150521.194198%
D710171810.111252%

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 8443 7102 5 5 0.06% 0.07%
B 8443 7102 40 40 0.47% 0.56%
C 8443 7101 1452 1452 17.20% 20.45%
D 8443 7102 665 665 7.88% 9.36%

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 693415 4551.1 736 720 152.2
A 13 248 32525 208.96 736 720 152.2
A 12 189 29819 191.18 736 720 152.2
B 0 229 749292 5336.34 729 707 140.3
B 0 245 47726 335.17 729 707 140.3
B 15 35 47199 331.42 729 707 140.3
C 0 239 6295157 40887.92 665 669 153.9
C 9 54 492740 3196.41 665 669 153.9
C 15 214 289095 1873.56 665 669 153.9
D 1 52 1623570 9589.02 683 663 169.2
D 12 233 295322 1741.01 683 663 169.2
D 2 16 259069 1526.8 683 663 169.2

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