ASTROSAT CZTI

Data Quality Report

Orbit 20009

Creation date: 2024-06-27T18:10:02.625451
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/AS1A06_002T02_9000002982_20009cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_20009cztM0_level2_quad_clean.evt
Size (bytes)553,080,960109,543,680
Size527.5 MB 104.5 MB
Events in quadrant A4,067,526704,689
Events in quadrant B3,963,028711,194
Events in quadrant C4,032,118680,557
Events in quadrant D4,158,117678,768

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174442
B0171212
C0169832
D0179082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77921341.719713%
B77921872.399897%
C77922102.695072%
D7792881.129363%

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 8287 7795 39 39 0.47% 0.50%
B 8287 7795 13 13 0.16% 0.17%
C 8287 7795 3 3 0.04% 0.04%
D 8287 7795 21 21 0.25% 0.27%

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 14 238 308906 1559.21 962 939 197.5
A 14 254 42645 211.15 962 939 197.5
A 5 16 13423 63.21 962 939 197.5
B 7 220 108596 576.45 961 935 186.8
B 0 197 33357 173.6 961 935 186.8
B 12 111 22754 116.82 961 935 186.8
C 14 238 142736 645.07 925 931 219.8
C 9 221 119669 540.14 925 931 219.8
C 3 233 106471 480.1 925 931 219.8
D 1 52 486611 2126.27 940 912 228.4
D 12 227 61733 266.26 940 912 228.4
D 2 234 52212 224.58 940 912 228.4

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