ASTROSAT CZTI

Data Quality Report

Orbit 42382

Creation date: 2024-06-27T22:39:37.998670
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/AS1C06_010T01_9000005800_42382cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42382cztM0_level2_quad_clean.evt
Size (bytes)1,499,080,320396,766,080
Size1.4 GB 378.4 MB
Events in quadrant A12,744,7462,665,106
Events in quadrant B12,075,6562,666,599
Events in quadrant C12,982,1122,624,843
Events in quadrant D15,774,6482,355,704

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0533977
B0543446
C0552556
D0653736

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040
B05040
C05040
D05040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24721550.222483%
B247213921.585696%
C247213591.452207%
D2472213665.525443%

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 47304 24727 30 30 0.06% 0.12%
B 47304 24727 285 285 0.60% 1.15%
C 47304 24727 254 254 0.54% 1.03%
D 47305 24727 1129 1129 2.39% 4.57%

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 2373797 4461.16 2609 2555 531.5
A 13 248 127245 234.59 2609 2555 531.5
A 13 6 56949 102.33 2609 2555 531.5
B 4 81 813849 1669.33 2570 2496 486.0
B 5 172 247842 504.79 2570 2496 486.0
B 5 255 229160 466.35 2570 2496 486.0
C 14 254 1583307 2716.77 2530 2541 581.9
C 15 214 1013124 1736.83 2530 2541 581.9
C 8 79 130828 220.48 2530 2541 581.9
D 12 233 1590637 2629.79 2494 2419 603.9
D 13 171 1326989 2193.24 2494 2419 603.9
D 1 52 734507 1212.2 2494 2419 603.9

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