ASTROSAT CZTI

Data Quality Report

Orbit 18044

Creation date: 2024-06-27T17:44:17.433306
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_101T02_9000002680_18044cztM0_level2.evt modeM0/AS1A05_101T02_9000002680_18044cztM0_level2_quad_clean.evt
Size (bytes)524,496,96080,907,840
Size500.2 MB 77.2 MB
Events in quadrant A3,265,738499,578
Events in quadrant B3,298,701512,029
Events in quadrant C3,310,598497,718
Events in quadrant D5,549,120467,426

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140722
B0140292
C0140192
D0211972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6790550.810015%
B6790520.765832%
C6790861.266568%
D67901712.518409%

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 7730 6791 16 16 0.21% 0.24%
B 7730 6791 4 4 0.05% 0.06%
C 7730 6791 0 0 0.00% 0.00%
D 7730 6791 99 99 1.28% 1.46%

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 59593 354.75 821 804 165.7
A 15 174 51667 306.92 821 804 165.7
A 0 226 6998 37.38 821 804 165.7
B 0 197 31534 195.67 826 805 157.0
B 12 111 18400 112.04 826 805 157.0
B 11 111 15569 94.01 826 805 157.0
C 14 238 126541 672.82 798 800 186.9
C 8 208 49808 262.23 798 800 186.9
C 3 233 15103 76.53 798 800 186.9
D 7 238 1590020 8178.21 791 767 194.3
D 1 52 539764 2773.65 791 767 194.3
D 5 222 218588 1120.89 791 767 194.3

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