ASTROSAT CZTI

Data Quality Report

Orbit 18559

Creation date: 2024-06-27T17:51:34.682942
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_188T01_9000002756_18559cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18559cztM0_level2_quad_clean.evt
Size (bytes)512,225,280100,042,560
Size488.5 MB 95.4 MB
Events in quadrant A3,934,433627,396
Events in quadrant B3,457,662676,747
Events in quadrant C3,293,715635,219
Events in quadrant D4,346,553597,670

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164902
B0149352
C0143932
D0180092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70713004.242681%
B7071440.622260%
C7071510.721256%
D70712894.087116%

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 7816 7072 271 271 3.47% 3.83%
B 7816 7072 8 8 0.10% 0.11%
C 7816 7072 1 1 0.01% 0.01%
D 7816 7072 227 227 2.90% 3.21%

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 666295 4106.28 809 791 162.1
A 14 111 149752 919.12 809 791 162.1
A 13 254 11704 67.34 809 791 162.1
B 7 220 76228 471.64 845 824 159.9
B 12 18 22441 135.21 845 824 159.9
B 12 111 19137 114.54 845 824 159.9
C 14 238 126449 672.91 802 808 186.7
C 9 54 10620 52.55 802 808 186.7
C 8 128 9175 44.81 802 808 186.7
D 7 238 1082691 5613.23 789 765 192.7
D 1 52 139539 719.99 789 765 192.7
D 7 38 77993 400.67 789 765 192.7

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