ASTROSAT CZTI

Data Quality Report

Orbit 52561

Creation date: 2025-06-17T11:31:56.199359
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/AS1C09_011T06_9000006478_52561cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52561cztM0_level2_quad_clean.evt
Size (bytes)879,724,80088,217,280
Size839.0 MB 84.1 MB
Events in quadrant A3,538,254681,718
Events in quadrant B6,608,872698,210
Events in quadrant C5,544,329622,400
Events in quadrant D16,305,756158,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159240
B0247046
C0217590
D0533951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7322941.283802%
B73225157.033597%
C73234516.158678%
D7322568277.601748%

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 7322 7322 72 72 0.98% 0.98%
B 7323 7323 282 282 3.85% 3.85%
C 7323 7323 412 412 5.63% 5.63%
D 7322 7322 5094 5094 69.57% 69.57%

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 4 249 193032 1004.94 764 745 191.3
A 3 14 69316 358.37 764 745 191.3
A 3 114 58995 304.43 764 745 191.3
B 10 254 1667922 10545.47 738 712 158.1
B 10 44 394659 2491.8 738 712 158.1
B 7 0 351472 2218.63 738 712 158.1
C 15 248 727488 3675.91 717 709 197.7
C 13 3 722211 3649.22 717 709 197.7
C 15 224 472577 2386.62 717 709 197.7
D 6 42 7456289 59569.22 431 412 125.2
D 2 62 3780379 30200.3 431 412 125.2
D 8 176 752447 6008.43 431 412 125.2

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