ASTROSAT CZTI

Data Quality Report

Orbit 50553

Creation date: 2025-02-01T11:03:34.760723
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_50553cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50553cztM0_level2_quad_clean.evt
Size (bytes)617,924,16075,386,880
Size589.3 MB 71.9 MB
Events in quadrant A6,956,126425,973
Events in quadrant B4,138,404575,291
Events in quadrant C7,271,618380,257
Events in quadrant D4,051,104490,196

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247341
B0164081
C0256591
D0162011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5876153326.089176%
B58763936.688223%
C5877196733.469457%
D58772704.594181%

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 6891 5876 1220 1220 17.70% 20.76%
B 6891 5877 181 181 2.63% 3.08%
C 6891 5877 1341 1341 19.46% 22.82%
D 6892 5878 216 216 3.13% 3.67%

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 12 250 2324448 16618.31 558 543 139.8
A 4 249 1209799 8647.42 558 543 139.8
A 3 130 388368 2773.34 558 543 139.8
B 7 0 660494 5114.89 605 585 129.0
B 12 0 475301 3679.48 605 585 129.0
B 5 185 118971 917.6 605 585 129.0
C 15 178 1900750 13899.52 489 486 136.7
C 15 214 1002597 7329.96 489 486 136.7
C 15 218 862822 6307.58 489 486 136.7
D 6 42 499488 3021.28 591 570 165.1
D 2 165 214155 1293.4 591 570 165.1
D 2 249 197842 1194.61 591 570 165.1

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