ASTROSAT CZTI

Data Quality Report

Orbit 40683

Creation date: 2024-06-27T22:19:08.109740
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_029T02_9000005558_40683cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40683cztM0_level2_quad_clean.evt
Size (bytes)380,620,80093,818,880
Size363.0 MB 89.5 MB
Events in quadrant A3,135,944645,245
Events in quadrant B3,269,597658,544
Events in quadrant C2,890,744626,720
Events in quadrant D4,328,977493,864

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127533
B0135292
C0121962
D0169802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5952130.218414%
B5952841.411290%
C5952100.168011%
D5952106317.859543%

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 7264 5953 3 3 0.04% 0.05%
B 7264 5953 49 49 0.67% 0.82%
C 7264 5953 9 9 0.12% 0.15%
D 7264 5953 316 316 4.35% 5.31%

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 550735 4030.88 662 648 136.5
A 12 189 22493 160.07 662 648 136.5
A 13 254 7857 52.83 662 648 136.5
B 0 229 258736 2022.8 655 637 127.6
B 5 255 98061 763.54 655 637 127.6
B 15 85 86971 676.63 655 637 127.6
C 15 214 260750 1723.85 643 647 150.9
C 9 187 71082 466.81 643 647 150.9
C 0 10 18148 115.99 643 647 150.9
D 12 227 725950 4961.48 587 570 146.2
D 2 249 207389 1414.61 587 570 146.2
D 13 171 206337 1407.41 587 570 146.2

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