ASTROSAT CZTI

Data Quality Report

Orbit 18202

Creation date: 2024-06-27T17:46:41.016903
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/AS1T03_003T01_9000002712_18202cztM0_level2.evt modeM0/AS1T03_003T01_9000002712_18202cztM0_level2_quad_clean.evt
Size (bytes)643,127,040113,852,160
Size613.3 MB 108.6 MB
Events in quadrant A3,637,704741,111
Events in quadrant B3,589,861752,013
Events in quadrant C6,312,216699,671
Events in quadrant D5,405,869709,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016617144
B016341150
C024745638
D022292618

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7874710.901702%
B7872540.685976%
C780985010.884876%
D78092513.214240%

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 8450 7942 20 20 0.24% 0.25%
B 8450 7942 1 1 0.01% 0.01%
C 8450 7917 473 473 5.60% 5.97%
D 8449 7911 128 128 1.51% 1.62%

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 152973 827.24 904 885 183.8
A 0 226 7722 37.19 904 885 183.8
A 3 137 6881 32.61 904 885 183.8
B 12 111 21234 116.7 905 881 174.4
B 11 111 18030 98.33 905 881 174.4
B 14 111 15140 81.76 905 881 174.4
C 4 254 2924289 14882.77 829 836 196.4
C 14 238 126787 641.19 829 836 196.4
C 3 233 18047 87.62 829 836 196.4
D 5 222 1669817 7903.9 862 835 211.2
D 7 238 271848 1283.45 862 835 211.2
D 10 70 147950 696.7 862 835 211.2

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