ASTROSAT CZTI

Data Quality Report

Orbit 17179

Creation date: 2024-06-27T17:33:14.169090
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_185T04_9000002548_17179cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17179cztM0_level2_quad_clean.evt
Size (bytes)494,562,24097,070,400
Size471.7 MB 92.6 MB
Events in quadrant A3,191,445648,370
Events in quadrant B3,306,070647,759
Events in quadrant C3,332,499612,256
Events in quadrant D4,713,922585,121

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136252
B0140523
C0138732
D0181852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6386350.548074%
B6385530.830070%
C6385731.143305%
D63854246.640564%

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 7611 6387 0 0 0.00% 0.00%
B 7610 6386 14 14 0.18% 0.22%
C 7610 6386 0 0 0.00% 0.00%
D 7610 6386 337 337 4.43% 5.28%

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 12 189 61785 372.93 811 793 163.5
A 12 96 9883 55.58 811 793 163.5
A 0 226 7165 38.96 811 793 163.5
B 7 220 70822 463.24 803 783 151.2
B 0 197 36150 233.92 803 783 151.2
B 0 189 28231 181.54 803 783 151.2
C 3 233 192961 1076.04 772 778 178.6
C 14 238 119606 665.32 772 778 178.6
C 7 220 8734 44.55 772 778 178.6
D 5 222 702935 3802.95 773 751 184.6
D 1 52 603438 3264.09 773 751 184.6
D 15 0 358665 1938.42 773 751 184.6

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