ASTROSAT CZTI

Data Quality Report

Orbit 20574

Creation date: 2024-06-27T18:17:00.748246
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/AS1A05_088T03_9000003042_20574cztM0_level2.evt modeM0/AS1A05_088T03_9000003042_20574cztM0_level2_quad_clean.evt
Size (bytes)406,385,28065,566,080
Size387.6 MB 62.5 MB
Events in quadrant A2,483,397411,886
Events in quadrant B2,502,241412,708
Events in quadrant C2,477,988400,900
Events in quadrant D4,477,402382,692

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109640
B0108960
C0108220
D0169480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5381220.408846%
B538270.130063%
C5382200.371609%
D53825019.308807%

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 5381 5381 16 16 0.30% 0.30%
B 5382 5382 6 6 0.11% 0.11%
C 5382 5382 0 0 0.00% 0.00%
D 5382 5382 466 466 8.66% 8.66%

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 15 174 62551 482.26 628 614 128.4
A 0 226 5339 36.79 628 614 128.4
A 3 137 5289 36.4 628 614 128.4
B 15 201 19231 152.73 626 609 121.9
B 12 111 14750 115.98 626 609 121.9
B 11 111 13053 102.06 626 609 121.9
C 14 238 95906 664.51 606 610 143.4
C 7 220 7971 51.33 606 610 143.4
C 9 54 4941 30.2 606 610 143.4
D 5 222 2063150 14147.7 592 575 145.8
D 1 52 62852 427.17 592 575 145.8
D 7 238 38567 260.6 592 575 145.8

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