ASTROSAT CZTI

Data Quality Report

Orbit 51963

Creation date: 2025-05-07T12:51:56.182505
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_9000006468_51963cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51963cztM0_level2_quad_clean.evt
Size (bytes)999,786,24078,600,960
Size953.5 MB 75.0 MB
Events in quadrant A7,644,999537,360
Events in quadrant B5,388,421635,927
Events in quadrant C11,204,733371,541
Events in quadrant D12,244,307358,468

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274801
B0207191
C0380001
D0411181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6829112716.503148%
B68295978.742129%
C6829305944.794260%
D6830293242.928258%

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 7069 6831 865 865 12.24% 12.66%
B 7069 6831 369 369 5.22% 5.40%
C 7069 6830 2296 2296 32.48% 33.62%
D 7070 6833 2828 2828 40.00% 41.39%

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 7 64 2396394 15045.18 642 626 159.2
A 4 95 1632175 10245.96 642 626 159.2
A 15 250 146542 916.34 642 626 159.2
B 4 249 752814 5230.87 680 657 143.8
B 10 254 533203 3703.59 680 657 143.8
B 5 185 518543 3601.63 680 657 143.8
C 15 224 7393693 49444.88 531 525 149.5
C 15 192 489705 3271.59 531 525 149.5
C 0 193 477518 3190.09 531 525 149.5
D 6 42 7215120 44712.3 561 537 161.4
D 12 17 1097380 6797.67 561 537 161.4
D 10 181 387667 2399.23 561 537 161.4

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