ASTROSAT CZTI

Data Quality Report

Orbit 31839

Creation date: 2024-06-27T20:33:21.627875
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/AS1A10_109T01_9000004646_31839cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31839cztM0_level2_quad_clean.evt
Size (bytes)1,489,841,280245,528,640
Size1.4 GB 234.2 MB
Events in quadrant A8,920,6311,590,737
Events in quadrant B13,968,9451,575,969
Events in quadrant C10,312,8051,510,452
Events in quadrant D10,659,3741,473,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382133
B0560803
C0422393
D0442023

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18662920.492980%
B186622371.269960%
C186626323.386561%
D186634612.470128%

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 20442 18665 0 0 0.00% 0.00%
B 20442 18665 2 2 0.01% 0.01%
C 20442 18665 139 139 0.68% 0.74%
D 20443 18666 302 302 1.48% 1.62%

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 31518 63.25 2309 2268 462.4
A 3 137 24009 47.02 2309 2268 462.4
A 0 226 19366 36.97 2309 2268 462.4
B 6 159 4936449 11356.89 2274 2215 434.5
B 12 111 55819 123.38 2274 2215 434.5
B 11 111 50666 111.52 2274 2215 434.5
C 0 10 943614 1831.04 2196 2212 514.1
C 14 238 417886 808.49 2196 2212 514.1
C 3 233 203293 391.11 2196 2212 514.1
D 12 218 978474 1850.43 2219 2162 527.6
D 8 195 639401 1207.78 2219 2162 527.6
D 12 233 229413 430.71 2219 2162 527.6

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