ASTROSAT CZTI

Data Quality Report

Orbit 20210421_A10_071T10_9000004328_level2

Creation date: 2021-04-23T16:58:48.590093
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_071T10_9000004328cztM0_level2_bc.evt modeM0/AS1A10_071T10_9000004328cztM0_level2_quad_clean.evt
Size (bytes)2,324,972,160667,200,960
Size2.2 GB 636.3 MB
Events in quadrant A11,309,0124,338,625
Events in quadrant B25,209,2514,340,602
Events in quadrant C11,715,3304,120,979
Events in quadrant D18,692,1513,893,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01072550
B01567380
C01110270
D01336950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010460
B010460
C010460
D010460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A512107941.550478%
B5121014212.774849%
C5121011782.300332%
D5121034596.754540%

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 59906 51213 0 0 0.00% 0.00%
B 59906 51214 12 12 0.02% 0.02%
C 59906 51213 5 5 0.01% 0.01%
D 59906 51208 260 260 0.43% 0.51%

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 8 192 112804 178.63 2901 2853 615.5
A 13 254 86363 135.68 2901 2853 615.5
A 0 226 18335 25.15 2901 2853 615.5
B 6 159 13512037 24609.5 2914 2849 548.9
B 0 229 389985 705.24 2914 2849 548.9
B 4 171 87140 153.55 2914 2849 548.9
C 3 233 928812 1452.09 2749 2745 637.7
C 2 114 96629 147.21 2749 2745 637.7
C 10 22 69333 104.41 2749 2745 637.7
D 13 104 5828428 9375.59 2720 2653 621.4
D 8 195 1106239 1776.03 2720 2653 621.4
D 7 223 461254 738.04 2720 2653 621.4

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