ASTROSAT CZTI

Data Quality Report

Orbit 35969

Creation date: 2024-06-27T21:21:11.138476
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/AS1T05_009T08_9000005150_35969cztM0_level2.evt modeM0/AS1T05_009T08_9000005150_35969cztM0_level2_quad_clean.evt
Size (bytes)792,780,48090,129,600
Size756.1 MB 86.0 MB
Events in quadrant A2,602,499706,213
Events in quadrant B13,867,953286,108
Events in quadrant C3,337,407693,658
Events in quadrant D3,833,928660,462

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112413
B0448822
C0131512
D0152132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A542990.165776%
B5429531597.900166%
C54292454.512802%
D54292354.328606%

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 7281 5430 3 3 0.04% 0.06%
B 7281 5429 5179 5179 71.13% 95.40%
C 7281 5430 172 172 2.36% 3.17%
D 7281 5430 201 201 2.76% 3.70%

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 170612 1370.08 619 606 124.1
A 15 169 16052 124.48 619 606 124.1
A 8 144 12721 97.64 619 606 124.1
B 5 31 4854754 90754.47 273 266 53.5
B 5 15 4699230 87846.96 273 266 53.5
B 5 14 2695567 50388.55 273 266 53.5
C 9 187 640572 4695.01 588 592 136.3
C 15 214 224194 1640.38 588 592 136.3
C 0 10 109200 796.77 588 592 136.3
D 2 250 482261 3387.51 590 575 142.2
D 12 17 243737 1710.07 590 575 142.2
D 7 223 133037 931.55 590 575 142.2

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