ASTROSAT CZTI

Data Quality Report

Orbit 35365

Creation date: 2024-06-27T21:12:33.185195
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_099T01_9000005068_35365cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35365cztM0_level2_quad_clean.evt
Size (bytes)665,375,04064,972,800
Size634.6 MB 62.0 MB
Events in quadrant A2,666,719477,161
Events in quadrant B10,289,639235,214
Events in quadrant C2,911,901468,481
Events in quadrant D3,945,916436,348

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106903
B0338712
C0113362
D0155642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4973100.201086%
B4973363173.014277%
C49731372.754876%
D4973921.849990%

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 7097 4974 2 2 0.03% 0.04%
B 7097 4974 3161 3161 44.54% 63.55%
C 7097 4974 109 109 1.54% 2.19%
D 7097 4974 80 80 1.13% 1.61%

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 113505 896.34 625 614 125.9
A 15 169 63554 499.73 625 614 125.9
A 14 239 25456 197.24 625 614 125.9
B 4 251 8666972 127950.56 351 343 67.7
B 5 172 102931 1514.57 351 343 67.7
B 4 81 54898 805.43 351 343 67.7
C 0 10 367531 2663.42 591 597 137.8
C 15 214 208328 1507.83 591 597 137.8
C 0 207 17197 120.49 591 597 137.8
D 8 195 844787 5712.4 598 581 147.8
D 7 80 210925 1423.31 598 581 147.8
D 2 152 100629 676.98 598 581 147.8

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