ASTROSAT CZTI

Data Quality Report

Orbit 20210514_A10_121T02_9000004378_level2

Creation date: 2021-05-18T17:08:44.462420
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_121T02_9000004378cztM0_level2_bc.evt modeM0/AS1A10_121T02_9000004378cztM0_level2_quad_clean.evt
Size (bytes)11,092,239,3602,818,152,000
Size10.3 GB 2.6 GB
Events in quadrant A56,272,39318,501,183
Events in quadrant B109,205,40618,518,137
Events in quadrant C64,472,09418,188,973
Events in quadrant D93,178,96017,211,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04082440
B05797930
C04396550
D05765310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038140
B038140
C039180
D038140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18954225191.328993%
B18863042512.253618%
C18865760673.215889%
D1890851922010.164741%

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 232107 191447 73 73 0.03% 0.04%
B 232107 188634 14 14 0.01% 0.01%
C 232107 189748 58 58 0.02% 0.03%
D 232107 190228 926 926 0.40% 0.49%

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 0 13 1504794 559.87 13805 13682 2663.3
A 4 2 731725 269.6 13805 13682 2663.3
A 8 192 383267 138.77 13805 13682 2663.3
B 6 159 52546259 21909.55 13799 13584 2397.7
B 0 229 1954709 809.58 13799 13584 2397.7
B 0 230 236144 92.82 13799 13584 2397.7
C 3 233 9739619 3223.64 13205 13372 3017.2
C 14 238 1236883 405.52 13205 13372 3017.2
C 0 10 609721 197.65 13205 13372 3017.2
D 13 104 31258159 9959.31 12904 12713 3137.3
D 8 195 4033840 1281.71 12904 12713 3137.3
D 12 227 3196574 1014.84 12904 12713 3137.3

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