ASTROSAT CZTI

Data Quality Report

Orbit 45490

Creation date: 2024-06-27T23:12:49.957948
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_054T01_9000006098_45490cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45490cztM0_level2_quad_clean.evt
Size (bytes)535,426,560106,632,000
Size510.6 MB 101.7 MB
Events in quadrant A5,569,588724,967
Events in quadrant B4,199,378694,169
Events in quadrant C3,614,857724,345
Events in quadrant D5,938,368637,824

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213941
B0169341
C0151511
D0221751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64152183.398285%
B641569310.802806%
C64152163.367108%
D64164637.216334%

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 7515 6416 23 23 0.31% 0.36%
B 7515 6416 317 317 4.22% 4.94%
C 7515 6416 155 155 2.06% 2.42%
D 7516 6417 294 294 3.91% 4.58%

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 2542868 16527.64 740 724 153.8
A 13 248 92687 597.89 740 724 153.8
A 9 191 23341 147.04 740 724 153.8
B 15 201 1308520 9597.77 697 677 136.3
B 12 18 37252 268.41 697 677 136.3
B 15 85 34084 245.16 697 677 136.3
C 14 254 663413 3816.66 738 743 173.6
C 2 14 57812 328.69 738 743 173.6
C 13 61 4791 23.31 738 743 173.6
D 11 241 1407952 7799.16 716 696 180.4
D 1 52 891903 4939.16 716 696 180.4
D 5 222 368296 2037.27 716 696 180.4

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