ASTROSAT CZTI

Data Quality Report

Orbit 15832

Creation date: 2024-06-27T17:14:07.262490
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/AS1A04_143T01_9000002344_15832cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15832cztM0_level2_quad_clean.evt
Size (bytes)532,774,08091,183,680
Size508.1 MB 87.0 MB
Events in quadrant A4,512,916570,838
Events in quadrant B3,804,707591,738
Events in quadrant C3,538,348567,701
Events in quadrant D3,817,946557,390

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177324
B0157862
C0148512
D0160392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67982493.662842%
B67981351.985878%
C67981311.927037%
D67981341.971168%

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 9031 6802 133 133 1.47% 1.96%
B 9031 6802 32 32 0.35% 0.47%
C 9031 6802 18 18 0.20% 0.26%
D 9031 6802 58 58 0.64% 0.85%

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 15 239 1169131 6664.8 863 845 175.3
A 15 157 16788 90.95 863 845 175.3
A 9 143 9288 48.17 863 845 175.3
B 4 173 180352 1084.4 875 853 165.5
B 4 216 120020 719.92 875 853 165.5
B 3 209 20363 117.87 875 853 165.5
C 14 238 129352 654.39 843 852 196.4
C 10 22 101766 513.91 843 852 196.4
C 3 233 20306 99.07 843 852 196.4
D 1 52 440617 2077.2 851 826 211.7
D 12 233 70324 328.25 851 826 211.7
D 7 223 30151 138.51 851 826 211.7

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