ASTROSAT CZTI

Data Quality Report

Orbit 20220425_A11_093T01_9000005090_level2

Creation date: 2022-04-27T14:52:56.751591
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_093T01_9000005090cztM0_level2_bc.evt modeM0/AS1A11_093T01_9000005090cztM0_level2_quad_clean.evt
Size (bytes)2,777,235,840766,448,640
Size2.6 GB 730.9 MB
Events in quadrant A28,992,9533,355,380
Events in quadrant B16,216,0595,369,496
Events in quadrant C16,683,2425,504,587
Events in quadrant D18,393,2245,139,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011420
B011420
C011420
D011420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02692930
B01332330
C01246110
D01363180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02110
B02110
C02110
D02110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559532417143.198756%
B5595319683.517238%
C559537831.399389%
D5595314622.612907%

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 77075 55940 872 872 1.13% 1.56%
B 77075 55952 60 60 0.08% 0.11%
C 77075 55954 108 108 0.14% 0.19%
D 77075 55953 83 83 0.11% 0.15%

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 15 169 20616008 47111.21 1937 1910 437.6
A 10 83 711615 1621.95 1937 1910 437.6
A 9 143 91269 204.22 1937 1910 437.6
B 5 172 3768260 6615.89 2905 2844 569.1
B 5 200 404767 706.18 2905 2844 569.1
B 0 189 224335 389.16 2905 2844 569.1
C 15 214 2338184 3467.07 2925 2908 673.6
C 0 10 2250329 3336.64 2925 2908 673.6
C 14 67 242659 355.95 2925 2908 673.6
D 8 195 1812058 2609.57 2886 2799 693.3
D 2 250 1189780 1712.03 2886 2799 693.3
D 10 118 900191 1294.34 2886 2799 693.3

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