ASTROSAT CZTI

Data Quality Report

Orbit 19488

Creation date: 2024-06-27T18:03:23.248137
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/AS1A05_229T02_9000002890_19488cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19488cztM0_level2_quad_clean.evt
Size (bytes)672,768,00092,053,440
Size641.6 MB 87.8 MB
Events in quadrant A3,268,534600,754
Events in quadrant B3,930,933599,604
Events in quadrant C3,772,589585,987
Events in quadrant D8,930,290514,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143021
B0161961
C0154031
D0315151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6988350.500859%
B69881962.804808%
C6988851.216371%
D6988131018.746422%

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 7338 6989 0 0 0.00% 0.00%
B 7338 6989 90 90 1.23% 1.29%
C 7338 6989 4 4 0.05% 0.06%
D 7338 6989 1237 1237 16.86% 17.70%

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 11 29 19821 111.39 839 820 170.6
A 5 16 8573 45.45 839 820 170.6
A 0 226 7158 37.16 839 820 170.6
B 3 112 536636 3351.51 831 811 159.9
B 0 197 56629 349.13 831 811 159.9
B 12 111 19348 115.94 831 811 159.9
C 9 221 376741 1994.57 805 811 188.5
C 14 238 125836 663.34 805 811 188.5
C 3 233 119022 627.19 805 811 188.5
D 7 238 2049291 11038.84 761 741 185.6
D 5 222 2007073 10811.34 761 741 185.6
D 7 223 880683 4741.66 761 741 185.6

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