ASTROSAT CZTI

Data Quality Report

Orbit 52611

Creation date: 2025-06-20T10:33:01.790645
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_52611cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52611cztM0_level2_quad_clean.evt
Size (bytes)993,240,00057,024,000
Size947.2 MB 54.4 MB
Events in quadrant A3,995,254544,752
Events in quadrant B13,892,944107,760
Events in quadrant C10,271,360251,112
Events in quadrant D8,156,399413,997

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158761
B0452524
C0346241
D0283091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58442945.030801%
B5844498685.318275%
C5844316154.089665%
D5844132122.604381%

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 6889 5845 257 257 3.73% 4.40%
B 6889 5845 4227 4227 61.36% 72.32%
C 6888 5844 2634 2634 38.24% 45.07%
D 6889 5845 1238 1238 17.97% 21.18%

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 842874 5587.42 602 589 150.7
A 12 80 175763 1162.04 602 589 150.7
A 3 14 135260 893.36 602 589 150.7
B 10 128 10918403 175081.43 290 282 62.4
B 10 254 1044657 16747.45 290 282 62.4
B 15 219 191008 3058.45 290 282 62.4
C 15 248 8039479 79597.09 356 352 101.0
C 12 252 346146 3423.78 356 352 101.0
C 12 2 114734 1132.52 356 352 101.0
D 6 42 1981344 12736.65 539 514 155.5
D 8 176 1041988 6696.63 539 514 155.5
D 2 37 755127 4852.13 539 514 155.5

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