ASTROSAT CZTI

Data Quality Report

Orbit 38023

Creation date: 2024-06-27T21:47:26.903317
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/AS1A11_082T01_9000005356_38023cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38023cztM0_level2_quad_clean.evt
Size (bytes)343,592,64094,222,080
Size327.7 MB 89.9 MB
Events in quadrant A2,835,821637,573
Events in quadrant B2,916,080655,639
Events in quadrant C2,665,750629,487
Events in quadrant D3,875,049547,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118003
B0122212
C0110812
D0151322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5468140.256035%
B5468611.115582%
C546840.073153%
D54683205.852231%

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 7170 5469 6 6 0.08% 0.11%
B 7170 5469 35 35 0.49% 0.64%
C 7170 5469 2 2 0.03% 0.04%
D 7170 5469 239 239 3.33% 4.37%

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 367464 2932.14 621 609 125.1
A 9 143 18623 143.98 621 609 125.1
A 12 189 17848 137.78 621 609 125.1
B 5 255 206676 1738.67 623 606 118.5
B 0 213 73760 617.22 623 606 118.5
B 5 172 47772 397.95 623 606 118.5
C 15 214 231111 1611.19 614 619 143.1
C 3 233 20790 141.0 614 619 143.1
C 0 10 9433 61.61 614 619 143.1
D 13 171 471205 3227.62 594 577 145.8
D 2 250 298582 2043.75 594 577 145.8
D 13 249 270208 1849.16 594 577 145.8

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