ASTROSAT CZTI

Data Quality Report

Orbit 44709

Creation date: 2024-06-27T23:05:30.320183
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/AS1A13_077T01_9000006014_44709cztM0_level2.fits modeM0/AS1A13_077T01_9000006014_44709cztM0_level2_quad_clean.evt
Size (bytes)544,484,160116,749,440
Size519.3 MB 111.3 MB
Events in quadrant A6,033,669750,401
Events in quadrant B3,790,355808,391
Events in quadrant C3,310,786779,068
Events in quadrant D6,447,688683,604

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242552
B0162582
C0152682
D0242812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73756458.745763%
B73762563.470716%
C73761171.586226%
D73765547.510846%

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 7805 7376 229 229 2.93% 3.10%
B 7806 7377 22 22 0.28% 0.30%
C 7806 7377 1 1 0.01% 0.01%
D 7806 7377 306 306 3.92% 4.15%

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 2058114 11955.57 825 806 172.1
A 15 223 720517 4182.44 825 806 172.1
A 10 248 56182 321.8 825 806 172.1
B 0 189 117823 697.3 843 816 167.8
B 5 172 116936 692.01 843 816 167.8
B 0 190 65811 387.33 843 816 167.8
C 14 254 26740 130.44 834 838 198.6
C 3 233 9229 42.26 834 838 198.6
C 1 3 8734 39.76 834 838 198.6
D 1 52 1145592 5623.38 812 789 203.6
D 11 241 561286 2753.22 812 789 203.6
D 5 222 493028 2417.93 812 789 203.6

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