ASTROSAT CZTI

Data Quality Report

Orbit 18123

Creation date: 2024-06-27T17:45:26.010056
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_097T01_9000002690_18123cztM0_level2.evt modeM0/AS1A05_097T01_9000002690_18123cztM0_level2_quad_clean.evt
Size (bytes)203,037,12022,199,040
Size193.6 MB 21.2 MB
Events in quadrant A1,426,159123,326
Events in quadrant B1,408,532127,894
Events in quadrant C1,371,955123,496
Events in quadrant D1,775,983122,715

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056781
B056021
C054531
D068971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24191466.035552%
B24191546.366267%
C24191596.572964%
D24191787.358413%

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 3609 2420 3 3 0.08% 0.12%
B 3609 2419 3 3 0.08% 0.12%
C 3609 2419 0 0 0.00% 0.00%
D 3609 2419 47 47 1.30% 1.94%

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 43462 594.33 352 344 72.5
A 15 174 28387 386.54 352 344 72.5
A 0 226 3116 38.21 352 344 72.5
B 7 220 25729 365.75 348 339 69.4
B 0 189 13730 192.9 348 339 69.4
B 0 219 8972 124.36 348 339 69.4
C 14 238 51695 650.1 335 337 79.0
C 3 233 5825 69.47 335 337 79.0
C 9 160 3262 37.03 335 337 79.0
D 7 238 276214 3220.18 345 335 85.7
D 1 52 64806 752.53 345 335 85.7
D 11 176 55647 645.63 345 335 85.7

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