ASTROSAT CZTI

Data Quality Report

Orbit 20151022_P01_161T01_9000000048_level2

Creation date: 2025-01-05T02:05:56.774710
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_161T01_9000000048cztM0_level2.fits modeM0/AS1P01_161T01_9000000048cztM0_level2_quad_clean.evt
Size (bytes)153,959,040130,158,720
Size146.8 MB 124.1 MB
Events in quadrant A862,506690,151
Events in quadrant B830,838552,241
Events in quadrant C922,156750,864
Events in quadrant D769,148672,405

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01017680
B01097910
C0760400
D0854940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18497216111.682976%
B18497363719.662648%
C1849740.021625%
D184975593.022112%

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 27728 18426 0 0 0.00% 0.00%
B 27728 18497 0 0 0.00% 0.00%
C 27728 18498 0 0 0.00% 0.00%
D 27728 18446 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 7 110 879 12.44 224 210 53.8
A 0 29 803 11.03 224 210 53.8
A 14 249 622 7.66 224 210 53.8
B 2 9 702 11.95 220 211 41.1
B 14 254 594 9.32 220 211 41.1
B 2 8 545 8.13 220 211 41.1
C 12 241 646 6.78 243 227 61.8
C 2 191 623 6.41 243 227 61.8
C 3 187 607 6.15 243 227 61.8
D 6 44 601 7.33 220 203 54.3
D 11 82 598 7.28 220 203 54.3
D 3 14 555 6.49 220 203 54.3

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