ASTROSAT CZTI

Data Quality Report

Orbit 40049

Creation date: 2024-06-27T22:11:41.972662
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/AS1A12_054T03_9000005516_40049cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40049cztM0_level2_quad_clean.evt
Size (bytes)731,557,440166,193,280
Size697.7 MB 158.5 MB
Events in quadrant A5,772,0631,134,413
Events in quadrant B5,032,0441,160,367
Events in quadrant C5,534,0181,114,872
Events in quadrant D9,924,382892,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236594
B0223003
C0231903
D0367953

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10541380.360497%
B105411071.015084%
C10541310.294090%
D10541154714.676027%

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 13496 10543 11 11 0.08% 0.10%
B 13496 10543 67 67 0.50% 0.64%
C 13496 10543 21 21 0.16% 0.20%
D 13496 10543 1305 1305 9.67% 12.38%

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 845427 3599.59 1153 1131 234.6
A 6 10 397424 1689.56 1153 1131 234.6
A 2 79 26545 108.35 1153 1131 234.6
B 5 255 233112 1029.34 1148 1113 225.4
B 0 221 79136 346.18 1148 1113 225.4
B 4 171 75795 331.35 1148 1113 225.4
C 9 187 489130 1848.08 1132 1141 264.1
C 15 214 431870 1631.23 1132 1141 264.1
C 14 254 124506 467.2 1132 1141 264.1
D 12 227 4549411 18075.44 1036 1008 251.6
D 13 249 869480 3451.32 1036 1008 251.6
D 2 250 243903 965.27 1036 1008 251.6

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