ASTROSAT CZTI

Data Quality Report

Orbit 17907

Creation date: 2024-06-27T17:42:28.936740
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/AS1C04_011T01_9000002664_17907cztM0_level2.evt modeM0/AS1C04_011T01_9000002664_17907cztM0_level2_quad_clean.evt
Size (bytes)485,913,600132,445,440
Size463.4 MB 126.3 MB
Events in quadrant A2,982,653898,599
Events in quadrant B3,235,448928,391
Events in quadrant C3,146,068899,055
Events in quadrant D4,932,835854,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129802
B0137532
C0132682
D0189352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6173200.323992%
B6173380.615584%
C6173811.312166%
D61732594.195691%

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 7553 6174 2 2 0.03% 0.03%
B 7553 6174 6 6 0.08% 0.10%
C 7553 6174 0 0 0.00% 0.00%
D 7553 6174 288 288 3.81% 4.66%

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 15 174 20591 128.76 770 754 154.1
A 0 226 6711 38.66 770 754 154.1
A 12 194 5744 32.39 770 754 154.1
B 0 189 105941 734.76 781 763 143.1
B 0 219 27285 185.28 781 763 143.1
B 7 220 23963 162.07 781 763 143.1
C 14 238 121802 692.68 763 769 174.7
C 3 233 24378 135.12 763 769 174.7
C 5 218 15536 84.51 763 769 174.7
D 7 238 693864 3826.06 756 735 181.2
D 12 110 654711 3609.93 756 735 181.2
D 5 222 492779 2716.07 756 735 181.2

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