ASTROSAT CZTI

Data Quality Report

Orbit 20220730_A11_079T01_9000005254_level2

Creation date: 2022-08-05T14:46:16.560174
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/AS1A11_079T01_9000005254cztM0_level2_bc.evt modeM0/AS1A11_079T01_9000005254cztM0_level2_quad_clean.evt
Size (bytes)6,946,545,6001,680,384,960
Size6.5 GB 1.6 GB
Events in quadrant A31,530,15410,854,039
Events in quadrant B78,837,24010,110,098
Events in quadrant C38,093,04010,887,886
Events in quadrant D53,059,72710,104,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026660
B026660
C026640
D026620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04950
B04950
C04950
D04950

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02732310
B04580600
C02903050
D03556710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1304082590.198607%
B1304031772813.594779%
C1304499270.710623%
D13040573895.666194%

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 179056 130561 17 17 0.01% 0.01%
B 179055 130536 3633 3633 2.03% 2.78%
C 179055 130577 280 280 0.16% 0.21%
D 179055 130535 2930 2930 1.64% 2.24%

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 10 83 4084511 2770.15 6699 6596 1472.1
A 15 222 806442 543.34 6699 6596 1472.1
A 9 143 380566 254.04 6699 6596 1472.1
B 5 184 46821990 37085.3 6405 6271 1262.4
B 4 81 1936548 1529.08 6405 6271 1262.4
B 0 221 1178357 928.47 6405 6271 1262.4
C 15 214 5241914 3433.3 6637 6594 1524.9
C 0 10 2048512 1339.08 6637 6594 1524.9
C 0 207 1231793 803.48 6637 6594 1524.9
D 12 17 13414899 8688.56 6492 6299 1543.2
D 2 250 2977101 1925.03 6492 6299 1543.2
D 1 52 2784990 1800.55 6492 6299 1543.2

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