ASTROSAT CZTI

Data Quality Report

Orbit 51665

Creation date: 2025-04-22T12:01:00.038167
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/AS1A13_031T01_9000006462_51665cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51665cztM0_level2_quad_clean.evt
Size (bytes)519,226,56096,347,520
Size495.2 MB 91.9 MB
Events in quadrant A4,029,724637,535
Events in quadrant B4,918,085659,493
Events in quadrant C5,993,367570,496
Events in quadrant D3,758,048582,318

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167261
B0193021
C0225541
D0161521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67052043.042506%
B67064506.710409%
C670687112.988369%
D67062413.593797%

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 7615 6706 160 160 2.10% 2.39%
B 7616 6706 287 287 3.77% 4.28%
C 7616 6707 741 741 9.73% 11.05%
D 7616 6707 201 201 2.64% 3.00%

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 7 64 678404 3910.96 697 681 173.3
A 12 3 224909 1293.96 697 681 173.3
A 5 240 119354 684.83 697 681 173.3
B 5 172 562833 3824.94 682 661 147.0
B 1 223 552526 3754.81 682 661 147.0
B 4 170 133442 903.42 682 661 147.0
C 15 189 2156562 11830.45 652 648 182.2
C 12 254 406294 2225.96 652 648 182.2
C 13 3 310124 1698.23 652 648 182.2
D 2 249 540926 2839.22 672 647 190.3
D 8 176 150853 789.35 672 647 190.3
D 6 42 107614 562.12 672 647 190.3

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