ASTROSAT CZTI

Data Quality Report

Orbit 40927

Creation date: 2024-06-27T22:22:20.969313
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_052T04_9000005582_40927cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40927cztM0_level2_quad_clean.evt
Size (bytes)559,445,76078,108,480
Size533.5 MB 74.5 MB
Events in quadrant A2,739,873624,125
Events in quadrant B2,378,959620,546
Events in quadrant C11,357,696227,137
Events in quadrant D3,823,382524,917

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113793
B0109102
C0372552
D0148332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5259100.190150%
B5259280.532421%
C5259347666.096216%
D52592584.905876%

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 7112 5260 3 3 0.04% 0.06%
B 7112 5260 17 17 0.24% 0.32%
C 7111 5259 3171 3171 44.59% 60.30%
D 7112 5260 217 217 3.05% 4.13%

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 487313 4069.61 580 569 119.6
A 13 254 7389 57.02 580 569 119.6
A 3 137 6415 48.88 580 569 119.6
B 5 255 127549 1125.13 572 554 112.9
B 12 111 13721 116.65 572 554 112.9
B 11 111 12655 107.21 572 554 112.9
C 0 239 9788501 120096.4 350 352 81.5
C 15 214 141116 1727.11 350 352 81.5
C 0 10 57582 702.19 350 352 81.5
D 1 47 505698 3683.35 556 539 137.1
D 12 233 347436 2529.38 556 539 137.1
D 12 79 271291 1974.18 556 539 137.1

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