ASTROSAT CZTI

Data Quality Report

Orbit 00279

Creation date: 2024-06-27T13:58:39.936789
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/AS1P01_126T01_9000000030_00279cztM0_level2.evt modeM0/AS1P01_126T01_9000000030_00279cztM0_level2_quad_clean.evt
Size (bytes)824,564,16053,346,240
Size786.4 MB 50.9 MB
Events in quadrant A6,399,387309,140
Events in quadrant B6,478,448312,243
Events in quadrant C6,006,679302,058
Events in quadrant D5,711,942297,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230513
B0232472
C0219082
D0210072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5635110.195209%
B563520.035492%
C563560.106477%
D5635150.266193%

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 7340 5636 146 146 1.99% 2.59%
B 7340 5636 67 67 0.91% 1.19%
C 7340 5636 47 47 0.64% 0.83%
D 7340 5636 55 55 0.75% 0.98%

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 65 71815 195.47 1621 1608 359.2
A 6 47 22703 58.73 1621 1608 359.2
A 5 244 10136 23.74 1621 1608 359.2
B 5 176 100304 254.95 1646 1659 386.9
B 10 14 42363 105.2 1646 1659 386.9
B 5 46 36170 89.19 1646 1659 386.9
C 14 48 61240 142.37 1503 1557 419.2
C 3 159 34246 77.98 1503 1557 419.2
C 1 1 8117 15.65 1503 1557 419.2
D 2 33 56286 122.98 1421 1483 445.6
D 13 7 44641 96.85 1421 1483 445.6
D 1 7 25638 54.2 1421 1483 445.6

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