ASTROSAT CZTI

Data Quality Report

Orbit 40904

Creation date: 2024-06-27T22:22:00.562430
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/AS1A12_102T01_9000005576_40904cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40904cztM0_level2_quad_clean.evt
Size (bytes)332,533,44089,084,160
Size317.1 MB 85.0 MB
Events in quadrant A2,876,492597,204
Events in quadrant B2,990,838608,479
Events in quadrant C2,585,104580,731
Events in quadrant D3,421,655520,666

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118072
B0127211
C0112921
D0140971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5583110.197027%
B55831152.059824%
C558360.107469%
D55831873.349454%

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 7135 5584 1 1 0.01% 0.02%
B 7135 5584 59 59 0.83% 1.06%
C 7135 5584 4 4 0.06% 0.07%
D 7135 5584 158 158 2.21% 2.83%

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 10 83 478909 3803.0 608 594 125.8
A 13 248 18310 140.86 608 594 125.8
A 12 189 16205 124.12 608 594 125.8
B 4 171 424889 3644.85 599 582 116.4
B 0 190 77847 663.72 599 582 116.4
B 15 85 69748 594.15 599 582 116.4
C 15 214 234159 1694.93 589 591 137.8
C 0 10 33611 239.62 589 591 137.8
C 10 70 9637 65.64 589 591 137.8
D 12 128 502250 3485.75 583 565 143.9
D 2 249 170822 1182.96 583 565 143.9
D 13 249 139739 966.99 583 565 143.9

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