ASTROSAT CZTI

Data Quality Report

Orbit 44150

Creation date: 2024-06-27T22:59:47.496766
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_080T05_9000005952_44150cztM0_level2.fits modeM0/AS1A13_080T05_9000005952_44150cztM0_level2_quad_clean.evt
Size (bytes)761,374,080123,494,400
Size726.1 MB 117.8 MB
Events in quadrant A8,327,828777,492
Events in quadrant B5,441,968879,549
Events in quadrant C7,414,742723,133
Events in quadrant D6,341,341769,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312111
B0219481
C0280541
D0248191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8486121714.341268%
B84863774.442611%
C8486162919.196323%
D84865526.504831%

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 9181 8487 971 971 10.58% 11.44%
B 9181 8487 199 199 2.17% 2.34%
C 9181 8487 1137 1137 12.38% 13.40%
D 9181 8487 394 394 4.29% 4.64%

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 15 223 3184168 17573.66 872 854 181.1
A 10 83 1694441 9349.54 872 854 181.1
A 14 238 32712 175.87 872 854 181.1
B 5 172 603994 3429.0 896 871 175.9
B 0 189 352200 1997.44 896 871 175.9
B 0 219 280372 1589.07 896 871 175.9
C 15 158 3093369 16774.45 783 786 184.4
C 12 16 831627 4506.56 783 786 184.4
C 14 254 234763 1269.11 783 786 184.4
D 1 52 1740506 7952.21 876 848 218.8
D 2 153 164941 750.09 876 848 218.8
D 13 249 151643 689.3 876 848 218.8

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