ASTROSAT CZTI

Data Quality Report

Orbit 30618

Creation date: 2024-06-27T20:17:46.248262
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/AS1A10_071T05_9000004412_30618cztM0_level2.evt modeM0/AS1A10_071T05_9000004412_30618cztM0_level2_quad_clean.evt
Size (bytes)578,018,88094,334,400
Size551.2 MB 90.0 MB
Events in quadrant A3,362,639615,617
Events in quadrant B5,279,721607,565
Events in quadrant C3,417,913586,363
Events in quadrant D4,986,741575,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142461
B0206121
C0143031
D0195301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67701071.580502%
B67701962.895126%
C67701572.319055%
D6770941.388479%

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 7250 6771 0 0 0.00% 0.00%
B 7250 6771 5 5 0.07% 0.07%
C 7250 6771 2 2 0.03% 0.03%
D 7250 6771 37 37 0.51% 0.55%

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 13 254 12716 68.02 867 848 174.5
A 8 192 12496 66.76 867 848 174.5
A 3 137 8791 45.52 867 848 174.5
B 6 159 1872804 11309.69 849 827 165.5
B 0 229 33296 196.16 849 827 165.5
B 0 190 23604 137.61 849 827 165.5
C 14 238 133349 682.69 823 828 194.1
C 0 10 39856 201.05 823 828 194.1
C 2 114 16381 80.12 823 828 194.1
D 8 195 1156991 5722.76 842 820 202.0
D 12 227 279605 1379.92 842 820 202.0
D 1 52 176808 871.1 842 820 202.0

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