ASTROSAT CZTI

Data Quality Report

Orbit 42023

Creation date: 2024-06-27T22:35:50.822218
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/AS1A12_006T12_9000005734_42023cztM0_level2.fits modeM0/AS1A12_006T12_9000005734_42023cztM0_level2_quad_clean.evt
Size (bytes)346,775,04084,824,640
Size330.7 MB 80.9 MB
Events in quadrant A3,087,964588,698
Events in quadrant B3,109,279573,642
Events in quadrant C2,435,262568,113
Events in quadrant D3,802,176477,261

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123512
B0126522
C0103912
D0146012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5153661.280807%
B51533045.899476%
C515350.097031%
D51535139.955366%

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 7035 5154 49 49 0.70% 0.95%
B 7035 5154 255 255 3.62% 4.95%
C 7035 5154 0 0 0.00% 0.00%
D 7035 5154 395 395 5.61% 7.66%

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 516228 4347.57 576 565 118.6
A 15 223 264399 2224.39 576 565 118.6
A 12 189 72480 606.32 576 565 118.6
B 7 202 374976 3438.45 561 547 108.9
B 5 255 264644 2425.25 561 547 108.9
B 4 171 130059 1189.33 561 547 108.9
C 15 214 217603 1661.54 561 565 130.6
C 9 54 11263 81.9 561 565 130.6
C 8 229 10214 73.87 561 565 130.6
D 13 249 1209149 9383.13 518 503 128.8
D 1 52 258616 2003.82 518 503 128.8
D 2 249 229286 1776.12 518 503 128.8

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