ASTROSAT CZTI

Data Quality Report

Orbit 44071

Creation date: 2024-06-27T22:59:02.099141
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_029T01_9000005940_44071cztM0_level2.fits modeM0/AS1A13_029T01_9000005940_44071cztM0_level2_quad_clean.evt
Size (bytes)458,593,920110,338,560
Size437.3 MB 105.2 MB
Events in quadrant A4,230,649745,599
Events in quadrant B3,100,508777,891
Events in quadrant C3,237,197724,312
Events in quadrant D5,875,024615,719

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171501
B0140091
C0144401
D0222091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68461081.577564%
B68471021.489704%
C6847941.372864%
D684679211.568799%

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 7416 6847 1 1 0.01% 0.01%
B 7417 6848 0 0 0.00% 0.00%
C 7417 6848 18 18 0.24% 0.26%
D 7416 6847 642 642 8.66% 9.38%

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 1108872 6913.95 778 759 160.3
A 12 227 66386 409.47 778 759 160.3
A 15 222 19800 118.8 778 759 160.3
B 12 111 20415 127.12 780 756 154.6
B 11 111 18723 116.18 780 756 154.6
B 14 111 18369 113.89 780 756 154.6
C 14 254 100701 551.13 773 780 181.3
C 11 16 42803 231.78 773 780 181.3
C 0 207 41908 226.85 773 780 181.3
D 13 249 1411713 7703.39 735 715 183.2
D 5 235 686836 3745.9 735 715 183.2
D 5 222 522638 2849.46 735 715 183.2

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