ASTROSAT CZTI

Data Quality Report

Orbit 40300

Creation date: 2024-06-27T22:14:42.252403
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/AS1A12_056T02_9000005538_40300cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40300cztM0_level2_quad_clean.evt
Size (bytes)367,320,96099,331,200
Size350.3 MB 94.7 MB
Events in quadrant A3,363,683683,846
Events in quadrant B2,700,345711,718
Events in quadrant C3,205,749664,168
Events in quadrant D3,919,568581,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131243
B0111232
C0125662
D0150962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52391272.424127%
B5239140.267227%
C5239901.717885%
D52393646.947891%

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 7242 5240 78 78 1.08% 1.49%
B 7242 5240 5 5 0.07% 0.10%
C 7242 5240 75 75 1.04% 1.43%
D 7242 5240 351 351 4.85% 6.70%

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 480150 3721.11 636 625 128.9
A 13 248 315650 2444.59 636 625 128.9
A 12 189 45549 348.61 636 625 128.9
B 4 170 66390 550.52 636 623 119.5
B 4 171 45062 371.99 636 623 119.5
B 0 230 32974 270.8 636 623 119.5
C 14 254 550127 3902.79 613 619 140.8
C 15 214 220837 1564.06 613 619 140.8
C 0 10 34932 243.7 613 619 140.8
D 1 47 865578 5934.75 598 582 145.8
D 2 250 251757 1723.32 598 582 145.8
D 12 233 225643 1544.15 598 582 145.8

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