ASTROSAT CZTI

Data Quality Report

Orbit 16351

Creation date: 2024-06-27T17:21:26.032777
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_069T02_9000002414_16351cztM0_level2.evt modeM0/AS1A05_069T02_9000002414_16351cztM0_level2_quad_clean.evt
Size (bytes)490,872,96096,756,480
Size468.1 MB 92.3 MB
Events in quadrant A3,424,869620,362
Events in quadrant B3,638,904636,306
Events in quadrant C3,406,312609,041
Events in quadrant D3,928,982585,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146853
B0153302
C0144062
D0163682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68751201.745455%
B6875981.425455%
C6875841.221818%
D68751792.603636%

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 8746 6878 57 57 0.65% 0.83%
B 8746 6878 32 32 0.37% 0.47%
C 8746 6878 6 6 0.07% 0.09%
D 8746 6878 110 110 1.26% 1.60%

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 231694 1384.95 829 809 166.7
A 0 226 7078 37.6 829 809 166.7
A 12 194 6068 31.55 829 809 166.7
B 0 189 132960 822.43 835 813 160.7
B 0 219 57568 353.22 835 813 160.7
B 0 229 39837 242.87 835 813 160.7
C 14 238 123394 647.58 803 808 189.3
C 3 233 59074 307.8 803 808 189.3
C 0 207 47947 249.02 803 808 189.3
D 12 218 683428 3479.31 805 779 196.2
D 10 70 64007 322.26 805 779 196.2
D 1 52 60719 305.5 805 779 196.2

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