ASTROSAT CZTI

Data Quality Report

Orbit 27357

Creation date: 2024-06-27T19:39:16.425822
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/AS1A09_038T12_9000003926_27357cztM0_level2.evt modeM0/AS1A09_038T12_9000003926_27357cztM0_level2_quad_clean.evt
Size (bytes)513,656,640113,777,280
Size489.9 MB 108.5 MB
Events in quadrant A2,971,005789,977
Events in quadrant B3,050,756802,966
Events in quadrant C3,482,175761,904
Events in quadrant D5,678,072704,849

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121870
B0124200
C0139800
D0205450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5508851.543210%
B55091212.196406%
C55092494.519877%
D5509117421.310583%

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 6803 5508 0 0 0.00% 0.00%
B 6804 5509 7 7 0.10% 0.13%
C 6804 5510 46 46 0.68% 0.83%
D 6804 5509 1033 1033 15.18% 18.75%

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 13 254 8740 53.78 766 753 148.5
A 0 226 6698 40.03 766 753 148.5
A 3 137 6378 37.88 766 753 148.5
B 15 32 50277 362.24 754 738 136.8
B 0 190 21194 149.58 754 738 136.8
B 12 111 15595 108.64 754 738 136.8
C 2 16 491393 2980.16 726 732 164.6
C 14 238 119397 720.74 726 732 164.6
C 15 208 41583 248.12 726 732 164.6
D 1 52 2717521 16817.51 689 675 161.5
D 2 250 129450 797.13 689 675 161.5
D 10 103 110541 680.08 689 675 161.5

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