ASTROSAT CZTI

Data Quality Report

Orbit 18113

Creation date: 2024-06-27T17:45:07.714614
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/AS1A05_019T01_9000002688_18113cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18113cztM0_level2_quad_clean.evt
Size (bytes)642,908,160108,947,520
Size613.1 MB 103.9 MB
Events in quadrant A4,178,693703,378
Events in quadrant B4,051,210714,874
Events in quadrant C3,813,901679,234
Events in quadrant D6,886,556647,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177982
B0173182
C0166483
D0258382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79782362.958135%
B79791211.516481%
C79781131.416395%
D79786898.636250%

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 8528 7981 54 54 0.63% 0.68%
B 8529 7982 17 17 0.20% 0.21%
C 8528 7981 7 7 0.08% 0.09%
D 8528 7980 552 552 6.47% 6.92%

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 4 2 484036 2470.1 956 933 195.6
A 15 174 16278 78.46 956 933 195.6
A 0 226 8328 37.81 956 933 195.6
B 7 220 89922 479.36 960 934 185.6
B 5 172 54408 288.05 960 934 185.6
B 0 197 54006 285.89 960 934 185.6
C 14 238 140652 645.6 923 928 216.4
C 0 207 53493 242.88 923 928 216.4
C 3 233 16121 70.2 923 928 216.4
D 7 238 2422212 10766.73 917 889 224.9
D 13 104 260406 1153.98 917 889 224.9
D 1 52 177690 786.17 917 889 224.9

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