ASTROSAT CZTI

Data Quality Report

Orbit 53389

Creation date: 2025-08-11T11:27:53.304960
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/AS1C09_011T09_9000006494_53389cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53389cztM0_level2_quad_clean.evt
Size (bytes)951,716,16094,173,120
Size907.6 MB 89.8 MB
Events in quadrant A4,490,368707,221
Events in quadrant B7,775,744677,796
Events in quadrant C16,390,884269,259
Events in quadrant D5,970,283655,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192630
B0285620
C0538070
D0232680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77842853.661357%
B7783138417.782346%
C7784502164.504111%
D77841912.453751%

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 7784 7784 202 202 2.60% 2.60%
B 7783 7783 854 854 10.97% 10.97%
C 7784 7784 4805 4805 61.73% 61.73%
D 7784 7784 254 254 3.26% 3.26%

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 15 174 727488 3669.97 798 776 198.0
A 0 8 368181 1855.43 798 776 198.0
A 3 27 56971 283.79 798 776 198.0
B 2 249 3415554 21323.32 748 724 160.1
B 4 206 545238 3400.12 748 724 160.1
B 4 171 226277 1408.43 748 724 160.1
C 1 241 12554385 98053.48 462 457 128.0
C 15 224 929298 7254.79 462 457 128.0
C 14 80 242511 1890.58 462 457 128.0
D 0 18 1640671 7326.83 780 744 223.8
D 2 249 342404 1526.46 780 744 223.8
D 3 12 326479 1455.31 780 744 223.8

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