ASTROSAT CZTI

Data Quality Report

Orbit 20659

Creation date: 2024-06-27T18:17:59.246942
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_022T09_9000003058_20659cztM0_level2.evt modeM0/AS1A05_022T09_9000003058_20659cztM0_level2_quad_clean.evt
Size (bytes)515,462,400132,318,720
Size491.6 MB 126.2 MB
Events in quadrant A3,580,478884,680
Events in quadrant B3,966,326881,389
Events in quadrant C3,564,137870,436
Events in quadrant D3,973,268832,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160192
B0171712
C0158682
D0173922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7752470.606295%
B77531662.141107%
C7753570.735199%
D77532673.443828%

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 8947 7755 3 3 0.03% 0.04%
B 8948 7756 39 39 0.44% 0.50%
C 8948 7756 0 0 0.00% 0.00%
D 8948 7756 85 85 0.95% 1.10%

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 5 16 60139 324.77 907 889 182.4
A 12 16 14369 73.89 907 889 182.4
A 12 194 8929 44.07 907 889 182.4
B 7 220 305885 1769.21 903 878 172.4
B 0 189 28026 157.47 903 878 172.4
B 6 36 24042 134.36 903 878 172.4
C 14 238 135317 658.43 871 877 204.2
C 7 247 17074 79.33 871 877 204.2
C 5 4 10916 49.17 871 877 204.2
D 1 20 445734 2141.4 855 828 207.8
D 13 153 112451 537.26 855 828 207.8
D 1 52 82766 394.38 855 828 207.8

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