ASTROSAT CZTI

Data Quality Report

Orbit 26096

Creation date: 2024-06-27T19:24:40.053977
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/AS1A09_018T01_9000003774_26096cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26096cztM0_level2_quad_clean.evt
Size (bytes)496,267,20072,930,240
Size473.3 MB 69.6 MB
Events in quadrant A3,355,816451,893
Events in quadrant B3,475,867464,834
Events in quadrant C3,369,184429,504
Events in quadrant D4,394,844415,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136690
B0141150
C0137090
D0171630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6395170.265833%
B6395290.453479%
C6394661.032218%
D63941031.610885%

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 7690 6395 0 0 0.00% 0.00%
B 7690 6395 0 0 0.00% 0.00%
C 7689 6394 0 0 0.00% 0.00%
D 7689 6394 109 109 1.42% 1.70%

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 13 254 10303 54.78 869 855 172.5
A 3 137 7469 38.35 869 855 172.5
A 0 226 7357 37.7 869 855 172.5
B 7 219 24668 146.31 872 854 162.8
B 12 111 19579 115.04 872 854 162.8
B 11 111 17444 101.92 872 854 162.8
C 14 238 137871 717.35 826 833 191.0
C 3 233 9811 47.0 826 833 191.0
C 13 61 5724 25.6 826 833 191.0
D 1 52 736182 3755.14 821 802 195.8
D 7 80 339497 1729.51 821 802 195.8
D 13 168 109952 557.36 821 802 195.8

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