ASTROSAT CZTI

Data Quality Report

Orbit 30681

Creation date: 2024-06-27T20:18:32.983764
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/AS1A10_094T81_9000004426_30681cztM0_level2.evt modeM0/AS1A10_094T81_9000004426_30681cztM0_level2_quad_clean.evt
Size (bytes)2,123,236,800330,742,080
Size2.0 GB 315.4 MB
Events in quadrant A9,041,6262,343,540
Events in quadrant B14,019,5552,315,129
Events in quadrant C9,603,6002,236,286
Events in quadrant D30,416,9281,866,463

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387403
B0553413
C0396683
D01029643

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181972481.362862%
B181972641.450789%
C181973281.802495%
D18197640235.181623%

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 20087 18200 75 75 0.37% 0.41%
B 20087 18200 31 31 0.15% 0.17%
C 20087 18200 72 72 0.36% 0.40%
D 20087 18200 6553 6553 32.62% 36.01%

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 0 13 634322 1470.54 2166 2123 429.9
A 8 192 36650 80.31 2166 2123 429.9
A 13 254 34284 74.81 2166 2123 429.9
B 6 159 5262436 12972.89 2137 2085 405.5
B 0 190 173622 423.04 2137 2085 405.5
B 0 230 57034 135.51 2137 2085 405.5
C 10 22 431519 900.34 2066 2078 477.0
C 3 233 418759 873.59 2066 2078 477.0
C 14 238 338665 705.67 2066 2078 477.0
D 8 195 16139943 36516.87 1862 1808 441.9
D 12 218 2965961 6707.19 1862 1808 441.9
D 12 33 1932403 4368.49 1862 1808 441.9

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