ASTROSAT CZTI

Data Quality Report

Orbit 09271

Creation date: 2024-06-27T15:43:43.528224
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/AS1G07_027T01_9000001304_09271cztM0_level2.evt modeM0/AS1G07_027T01_9000001304_09271cztM0_level2_quad_clean.evt
Size (bytes)115,197,12021,110,400
Size109.9 MB 20.1 MB
Events in quadrant A1,018,563123,196
Events in quadrant B798,697136,492
Events in quadrant C755,041134,581
Events in quadrant D810,494132,331

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071
B071
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108996949
B066943413
C065243272
D069603546

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06620
B06533
C06533
D06630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13241098.232628%
B1547422.714932%
C1554301.930502%
D1551493.159252%

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 3837 1602 22 22 0.57% 1.37%
B 3883 1880 6 6 0.15% 0.32%
C 3860 1886 1 1 0.03% 0.05%
D 3856 1871 12 12 0.31% 0.64%

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 8 5 317593 8935.67 163 160 35.5
A 5 16 45798 1284.7 163 160 35.5
A 13 251 8015 221.12 163 160 35.5
B 0 214 32168 796.81 195 190 40.1
B 12 111 4230 100.67 195 190 40.1
B 11 111 3338 78.44 195 190 40.1
C 14 234 19557 421.16 188 189 46.0
C 13 61 1487 28.23 188 189 46.0
C 8 222 968 16.94 188 189 46.0
D 2 136 56511 1174.57 187 181 48.0
D 1 52 31639 655.95 187 181 48.0
D 12 233 11898 244.32 187 181 48.0

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