ASTROSAT CZTI

Data Quality Report

Orbit 16487

Creation date: 2024-06-27T17:23:25.161405
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/AS1A05_108T01_9000002438_16487cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16487cztM0_level2_quad_clean.evt
Size (bytes)499,844,16092,056,320
Size476.7 MB 87.8 MB
Events in quadrant A4,561,334555,950
Events in quadrant B3,441,863618,174
Events in quadrant C3,600,674587,479
Events in quadrant D3,090,752570,758

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177663
B0142542
C0146652
D0136012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65304937.549770%
B6530570.872894%
C6530490.750383%
D6530120.183767%

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 7846 6531 382 382 4.87% 5.85%
B 7846 6532 12 12 0.15% 0.18%
C 7846 6532 0 0 0.00% 0.00%
D 7846 6532 6 6 0.08% 0.09%

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 15 174 1583682 10182.72 774 760 155.5
A 0 226 6594 37.53 774 760 155.5
A 12 194 5634 31.35 774 760 155.5
B 4 173 54210 346.46 820 802 154.2
B 15 35 47553 303.28 820 802 154.2
B 0 198 32798 207.56 820 802 154.2
C 3 233 376479 2048.21 791 796 183.4
C 14 238 122732 664.79 791 796 183.4
C 7 247 18947 98.96 791 796 183.4
D 10 70 36589 186.44 791 769 192.1
D 2 234 27461 138.93 791 769 192.1
D 12 218 25992 131.28 791 769 192.1

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