ASTROSAT CZTI

Data Quality Report

Orbit 23150

Creation date: 2024-06-27T18:50:35.267650
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/AS1A08_009T01_9000003422_23150cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23150cztM0_level2_quad_clean.evt
Size (bytes)486,282,240109,399,680
Size463.8 MB 104.3 MB
Events in quadrant A3,353,923701,581
Events in quadrant B3,419,110722,592
Events in quadrant C3,627,012697,725
Events in quadrant D3,827,327679,682

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150892
B0151502
C0156112
D0167572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73371311.785471%
B73381532.085037%
C73381562.125920%
D73381331.812483%

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 7462 7339 2 2 0.03% 0.03%
B 7463 7340 1 1 0.01% 0.01%
C 7463 7340 12 12 0.16% 0.16%
D 7463 7340 46 46 0.62% 0.63%

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 2 79 19318 105.85 861 842 174.6
A 6 16 14733 79.58 861 842 174.6
A 13 254 8839 45.81 861 842 174.6
B 12 111 20719 119.83 860 835 165.9
B 11 111 18363 105.63 860 835 165.9
B 0 189 16910 96.88 860 835 165.9
C 9 15 195409 1010.28 824 826 192.6
C 14 238 130331 672.4 824 826 192.6
C 0 10 71277 365.78 824 826 192.6
D 1 52 367013 1793.54 834 808 204.2
D 13 249 143571 699.2 834 808 204.2
D 1 239 101260 491.98 834 808 204.2

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