ASTROSAT CZTI

Data Quality Report

Orbit 50511

Creation date: 2025-01-29T15:52:20.086216
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/AS1T05_239T01_9000006444_50511cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50511cztM0_level2_quad_clean.evt
Size (bytes)766,748,16095,538,240
Size731.2 MB 91.1 MB
Events in quadrant A8,151,717532,277
Events in quadrant B4,015,956724,969
Events in quadrant C9,628,374537,356
Events in quadrant D6,027,897595,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291711
B0170873
C0337631
D0229431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7220169823.518006%
B72202954.085873%
C7220161622.382271%
D72204516.246537%

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 7239 7219 1286 1286 17.76% 17.81%
B 7239 7219 79 79 1.09% 1.09%
C 7239 7219 1487 1487 20.54% 20.60%
D 7239 7219 434 434 6.00% 6.01%

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 2380680 13944.92 692 674 170.7
A 10 253 1518411 8892.72 692 674 170.7
A 6 161 525857 3077.15 692 674 170.7
B 7 0 537445 3166.98 786 757 169.5
B 3 249 66698 389.11 786 757 169.5
B 0 155 42371 245.56 786 757 169.5
C 12 247 1809966 9368.03 709 705 193.1
C 4 5 1379567 7139.5 709 705 193.1
C 15 235 757373 3917.89 709 705 193.1
D 11 161 589280 2815.67 758 730 209.0
D 6 42 471182 2250.68 758 730 209.0
D 7 60 279353 1332.95 758 730 209.0

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