ASTROSAT CZTI

Data Quality Report

Orbit 45239

Creation date: 2024-06-27T23:11:13.447143
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_038T03_9000006058_45239cztM0_level2.fits modeM0/AS1A13_038T03_9000006058_45239cztM0_level2_quad_clean.evt
Size (bytes)462,726,720106,790,400
Size441.3 MB 101.8 MB
Events in quadrant A5,480,333697,973
Events in quadrant B3,152,765739,393
Events in quadrant C2,991,517711,893
Events in quadrant D5,000,859632,368

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213482
B0137922
C0135042
D0193312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64822103.239741%
B6482250.385683%
C6482320.493675%
D64812403.703132%

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 7572 6483 64 64 0.85% 0.99%
B 7572 6483 11 11 0.15% 0.17%
C 7572 6483 20 20 0.26% 0.31%
D 7571 6482 229 229 3.02% 3.53%

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 2519984 16565.18 727 711 152.1
A 13 248 84492 550.89 727 711 152.1
A 4 0 21548 137.01 727 711 152.1
B 5 32 120351 816.03 738 715 146.6
B 4 171 43210 289.86 738 715 146.6
B 12 111 18593 121.95 738 715 146.6
C 14 254 103131 595.97 727 732 171.8
C 12 249 30271 171.92 727 732 171.8
C 3 233 12410 67.97 727 732 171.8
D 11 241 384608 2161.67 709 689 177.6
D 13 249 339230 1906.17 709 689 177.6
D 12 17 332844 1870.21 709 689 177.6

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