ASTROSAT CZTI

Data Quality Report

Orbit 50942

Creation date: 2025-02-27T15:52:01.163048
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/AS1C07_001T01_9000006450_50942cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50942cztM0_level2_quad_clean.evt
Size (bytes)649,278,72083,024,640
Size619.2 MB 79.2 MB
Events in quadrant A8,507,389462,231
Events in quadrant B3,854,272631,857
Events in quadrant C5,995,503502,071
Events in quadrant D5,205,789493,001

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294721
B0156482
C0219441
D0195841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6086169027.768649%
B60852514.124897%
C608690914.935919%
D60865859.612225%

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 7226 6087 1624 1624 22.47% 26.68%
B 7225 6086 135 135 1.87% 2.22%
C 7226 6087 753 753 10.42% 12.37%
D 7226 6087 541 541 7.49% 8.89%

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 8 43 4103686 27149.12 598 583 151.1
A 12 3 589552 3897.05 598 583 151.1
A 12 80 449718 2971.8 598 583 151.1
B 4 81 787135 5844.2 637 616 134.6
B 4 171 185465 1373.51 637 616 134.6
B 0 171 122483 905.53 637 616 134.6
C 5 10 1596020 9766.17 585 579 163.4
C 4 12 439581 2687.26 585 579 163.4
C 12 252 374234 2287.25 585 579 163.4
D 8 176 1720968 10027.13 602 580 171.6
D 7 96 365347 2126.01 602 580 171.6
D 10 181 108730 630.34 602 580 171.6

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