ASTROSAT CZTI

Data Quality Report

Orbit 11071

Creation date: 2024-06-27T16:07:52.917588
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/AS1G08_075T01_9000001616_11071cztM0_level2.evt modeM0/AS1G08_075T01_9000001616_11071cztM0_level2_quad_clean.evt
Size (bytes)547,888,32065,151,360
Size522.5 MB 62.1 MB
Events in quadrant A3,819,964388,467
Events in quadrant B4,358,249392,021
Events in quadrant C3,060,879390,055
Events in quadrant D4,922,861358,211

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154023
B0170672
C0131862
D0190592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6362771.210311%
B63623004.715498%
C6362360.565860%
D63624416.931782%

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 7617 6363 0 0 0.00% 0.00%
B 7617 6363 132 132 1.73% 2.07%
C 7617 6363 0 0 0.00% 0.00%
D 7617 6363 366 366 4.81% 5.75%

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 646390 3985.1 806 790 162.0
A 8 15 57531 350.25 806 790 162.0
A 11 29 10708 61.22 806 790 162.0
B 4 239 1149242 7645.98 804 786 150.2
B 0 214 36846 240.07 804 786 150.2
B 12 111 16423 104.11 804 786 150.2
C 13 61 5987 29.1 783 790 178.6
C 14 234 2849 11.53 783 790 178.6
C 5 207 2296 8.43 783 790 178.6
D 10 253 1117950 6230.12 746 727 179.3
D 11 129 517804 2883.45 746 727 179.3
D 1 52 261210 1452.57 746 727 179.3

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