ASTROSAT CZTI

Data Quality Report

Orbit 15688

Creation date: 2024-06-27T17:12:07.135932
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/AS1T02_084T01_9000002318_15688cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15688cztM0_level2_quad_clean.evt
Size (bytes)452,237,76068,068,800
Size431.3 MB 64.9 MB
Events in quadrant A2,554,193429,747
Events in quadrant B2,557,477441,327
Events in quadrant C2,693,007426,794
Events in quadrant D5,542,378402,555

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109241
B0107271
C0113311
D0200841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5142510.991832%
B5142430.836250%
C5142731.419681%
D51423156.126021%

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 6243 5144 21 21 0.34% 0.41%
B 6243 5144 0 0 0.00% 0.00%
C 6243 5144 4 4 0.06% 0.08%
D 6243 5144 245 245 3.92% 4.76%

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 13 248 83594 648.92 629 615 127.9
A 13 210 48475 374.28 629 615 127.9
A 4 2 5835 40.82 629 615 127.9
B 4 173 31248 255.15 631 617 120.0
B 0 214 18627 150.02 631 617 120.0
B 12 111 13684 108.85 631 617 120.0
C 3 233 199465 1405.73 607 614 141.5
C 14 238 93708 658.1 607 614 141.5
C 0 207 22286 153.2 607 614 141.5
D 1 52 3080176 21255.97 603 588 144.9
D 12 110 113749 781.06 603 588 144.9
D 10 70 34968 237.3 603 588 144.9

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