ASTROSAT CZTI

Data Quality Report

Orbit 34176

Creation date: 2024-06-27T20:57:26.659016
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/AS1A11_047T15_9000004882_34176cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34176cztM0_level2_quad_clean.evt
Size (bytes)423,167,04095,558,400
Size403.6 MB 91.1 MB
Events in quadrant A2,459,537647,137
Events in quadrant B2,895,450659,940
Events in quadrant C3,424,429641,984
Events in quadrant D3,699,075596,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102483
B0117272
C0134492
D0143372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496740.080532%
B4967681.369036%
C49671492.999799%
D49671432.879001%

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 7060 4968 0 0 0.00% 0.00%
B 7060 4968 32 32 0.45% 0.64%
C 7060 4968 111 111 1.57% 2.23%
D 7060 4968 118 118 1.67% 2.38%

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 21183 164.03 626 616 125.4
A 13 6 19989 154.51 626 616 125.4
A 13 254 9116 67.79 626 616 125.4
B 5 172 232844 1968.88 625 612 118.0
B 4 232 73371 616.86 625 612 118.0
B 0 219 42427 354.51 625 612 118.0
C 0 239 513485 3713.39 602 610 138.1
C 0 10 317626 2295.3 602 610 138.1
C 15 214 219182 1582.53 602 610 138.1
D 8 195 669553 4238.27 590 578 157.8
D 7 223 199965 1263.21 590 578 157.8
D 10 118 142995 902.28 590 578 157.8

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