ASTROSAT CZTI

Data Quality Report

Orbit 46666

Creation date: 2024-06-27T23:26:09.107669
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/AS1A13_039T01_9000006246_46666cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46666cztM0_level2_quad_clean.evt
Size (bytes)139,682,88035,219,520
Size133.2 MB 33.6 MB
Events in quadrant A1,983,569226,636
Events in quadrant B1,140,389234,400
Events in quadrant C888,550232,070
Events in quadrant D981,564211,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073580
B049990
C045040
D046960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2236100.447227%
B2237441.966920%
C223710.044703%
D223790.402325%

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 2236 2236 6 6 0.27% 0.27%
B 2237 2237 29 29 1.30% 1.30%
C 2237 2237 0 0 0.00% 0.00%
D 2237 2237 8 8 0.36% 0.36%

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 10 83 1097170 22802.78 222 217 48.1
A 9 191 25156 518.42 222 217 48.1
A 13 254 2810 53.9 222 217 48.1
B 4 171 90816 1993.05 224 217 45.5
B 5 32 81383 1785.54 224 217 45.5
B 5 255 29242 638.51 224 217 45.5
C 1 241 13025 243.63 220 221 52.6
C 14 254 7323 135.13 220 221 52.6
C 12 250 6920 127.46 220 221 52.6
D 12 128 40585 727.4 215 207 55.5
D 13 249 37876 678.6 215 207 55.5
D 1 52 21583 385.08 215 207 55.5

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