ASTROSAT CZTI

Data Quality Report

Orbit 40849

Creation date: 2024-06-27T22:21:17.812085
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_104T02_9000005572_40849cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40849cztM0_level2_quad_clean.evt
Size (bytes)430,024,32085,314,240
Size410.1 MB 81.4 MB
Events in quadrant A3,006,188596,581
Events in quadrant B2,355,934610,020
Events in quadrant C2,948,594569,362
Events in quadrant D7,199,571439,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122583
B0107432
C0120812
D0250522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5245460.877026%
B5245270.514776%
C52451332.535748%
D5245117322.364156%

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 7067 5246 27 27 0.38% 0.51%
B 7067 5246 8 8 0.11% 0.15%
C 7067 5246 99 99 1.40% 1.89%
D 7067 5246 1445 1445 20.45% 27.54%

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 504459 4204.71 576 564 119.8
A 13 248 229477 1910.14 576 564 119.8
A 12 189 35151 288.61 576 564 119.8
B 4 171 66726 595.76 573 557 111.1
B 0 190 30155 266.49 573 557 111.1
B 12 111 13681 118.16 573 557 111.1
C 14 254 368566 2823.06 558 563 130.4
C 15 214 221081 1691.66 558 563 130.4
C 0 10 139458 1065.5 558 563 130.4
D 12 79 4833444 36251.96 534 517 133.3
D 13 249 123422 921.91 534 517 133.3
D 12 16 54446 404.52 534 517 133.3

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