ASTROSAT CZTI

Data Quality Report

Orbit 43777

Creation date: 2024-06-27T22:55:39.227283
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_026T01_9000005904_43777cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43777cztM0_level2_quad_clean.evt
Size (bytes)735,675,840105,462,720
Size701.6 MB 100.6 MB
Events in quadrant A7,262,363658,925
Events in quadrant B4,231,257830,935
Events in quadrant C6,423,375685,203
Events in quadrant D8,819,785570,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264862
B0166432
C0231542
D0306376

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6406146722.900406%
B64062734.261630%
C6406118318.467062%
D6405174727.275566%

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 7586 6406 1111 1111 14.65% 17.34%
B 7586 6407 84 84 1.11% 1.31%
C 7586 6407 978 978 12.89% 15.26%
D 7584 6405 1496 1496 19.73% 23.36%

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 15 223 3144780 21286.96 721 707 147.7
A 10 83 894472 6051.24 721 707 147.7
A 14 63 176267 1188.63 721 707 147.7
B 0 200 321285 2054.96 804 783 156.0
B 5 235 233912 1494.75 804 783 156.0
B 10 245 101305 644.52 804 783 156.0
C 15 174 2476594 14392.4 739 746 172.0
C 15 158 641870 3726.93 739 746 172.0
C 14 254 149672 865.72 739 746 172.0
D 12 33 2795817 14766.24 728 704 189.3
D 5 235 674273 3558.38 728 704 189.3
D 5 222 555401 2930.4 728 704 189.3

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