ASTROSAT CZTI

Data Quality Report

Orbit 41373

Creation date: 2024-06-27T22:28:16.156640
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_035T01_9000005660_41373cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41373cztM0_level2_quad_clean.evt
Size (bytes)311,765,76087,822,720
Size297.3 MB 83.8 MB
Events in quadrant A2,709,096599,953
Events in quadrant B2,347,236618,950
Events in quadrant C3,048,435559,980
Events in quadrant D3,051,088534,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110253
B0102032
C0119122
D0124462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4933130.263531%
B493380.162173%
C49332625.311170%
D49331713.466450%

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 6996 4934 4 4 0.06% 0.08%
B 6996 4934 2 2 0.03% 0.04%
C 6996 4934 252 252 3.60% 5.11%
D 6996 4934 145 145 2.07% 2.94%

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 10 83 473245 4047.4 570 558 116.8
A 12 189 27670 232.15 570 558 116.8
A 13 254 7249 57.29 570 558 116.8
B 4 81 42182 383.91 567 552 108.4
B 5 255 38793 352.66 567 552 108.4
B 0 190 23234 209.17 567 552 108.4
C 0 10 699513 5517.75 545 548 126.7
C 15 214 202326 1592.87 545 548 126.7
C 15 111 17872 136.76 545 548 126.7
D 1 47 338609 2481.02 561 547 136.3
D 1 52 246233 1803.08 561 547 136.3
D 13 249 169228 1237.94 561 547 136.3

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