ASTROSAT CZTI

Data Quality Report

Orbit 13275

Creation date: 2024-06-27T16:38:37.166196
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/AS1A04_167T02_9000001974_13275cztM0_level2.evt modeM0/AS1A04_167T02_9000001974_13275cztM0_level2_quad_clean.evt
Size (bytes)356,564,16055,206,720
Size340.0 MB 52.6 MB
Events in quadrant A2,077,141373,418
Events in quadrant B3,681,613319,167
Events in quadrant C1,687,792387,821
Events in quadrant D3,122,135351,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08818
B08616
C08816
D09020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105132125
B0152362084
C087921531
D0143652625

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243
B0267
C0254
D0244

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33601143.392857%
B3357102530.533214%
C3405300.881057%
D33702226.587537%

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 7901 3445 18 18 0.23% 0.52%
B 7901 3445 639 639 8.09% 18.55%
C 7901 3485 1 1 0.01% 0.03%
D 7901 3449 120 120 1.52% 3.48%

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 15 239 359347 4181.15 417 409 85.8
A 8 15 91719 1063.64 417 409 85.8
A 1 162 11220 125.93 417 409 85.8
B 4 239 2266126 34248.15 338 330 66.2
B 0 244 65252 981.31 338 330 66.2
B 4 173 11319 166.1 338 330 66.2
C 6 96 18412 177.46 427 429 101.3
C 14 234 3958 34.83 427 429 101.3
C 13 61 3051 25.87 427 429 101.3
D 1 52 1239555 12579.85 399 387 98.5
D 13 249 320117 3245.85 399 387 98.5
D 5 222 22646 225.97 399 387 98.5

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