ASTROSAT CZTI

Data Quality Report

Orbit 20160214_P01_161T03_9000000320_level2

Creation date: 2025-11-03T11:40:24.252789
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/AS1P01_161T03_9000000320cztM0_level2.fits modeM0/AS1P01_161T03_9000000320cztM0_level2_quad_clean.evt
Size (bytes)160,534,08073,998,720
Size153.1 MB 70.6 MB
Events in quadrant A925,938255,435
Events in quadrant B934,206262,047
Events in quadrant C931,704250,307
Events in quadrant D801,928226,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04340
B04340
C04360
D04360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140543764580392140539919859758
B1140543764580392140539919859758
C1140543764580392140539919859758
D1140543764580392140539919859758

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0801750
B0808910
C0749260
D0709770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177861460.820870%
B17796740.415824%
C17805710.398764%
D17799590.331479%

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 42367 30289 0 0 0.00% 0.00%
B 42367 30304 0 0 0.00% 0.00%
C 42367 30330 0 0 0.00% 0.00%
D 42367 30309 0 0 0.00% 0.00%

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 0 29 874 11.52 239 226 56.2
A 7 110 845 11.01 239 226 56.2
A 14 188 833 10.79 239 226 56.2
B 2 9 740 10.7 246 234 47.3
B 5 128 648 8.76 246 234 47.3
B 10 225 607 7.89 246 234 47.3
C 2 191 648 6.81 245 228 61.7
C 9 242 646 6.78 245 228 61.7
C 1 81 638 6.65 245 228 61.7
D 11 82 587 6.71 228 209 56.3
D 6 44 573 6.46 228 209 56.3
D 6 231 557 6.18 228 209 56.3

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