ASTROSAT CZTI

Data Quality Report

Orbit 27803

Creation date: 2024-06-27T19:44:33.054721
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/AS1A10_016T01_9000004016_27803cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27803cztM0_level2_quad_clean.evt
Size (bytes)415,457,28073,987,200
Size396.2 MB 70.6 MB
Events in quadrant A2,853,455466,441
Events in quadrant B2,932,279472,219
Events in quadrant C2,990,344454,928
Events in quadrant D3,413,962443,683

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120030
B0121830
C0122610
D0138650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5771450.779761%
B5771470.814417%
C5771581.005025%
D57711061.836770%

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 6861 5771 0 0 0.00% 0.00%
B 6861 5771 1 1 0.01% 0.02%
C 6861 5771 3 3 0.04% 0.05%
D 6861 5771 72 72 1.05% 1.25%

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 13 254 9445 58.89 739 724 148.1
A 3 137 6759 40.75 739 724 148.1
A 0 226 6315 37.75 739 724 148.1
B 10 245 22746 157.73 730 712 139.7
B 0 190 19183 132.22 730 712 139.7
B 12 111 16700 114.45 730 712 139.7
C 14 238 114747 679.42 712 716 167.8
C 3 233 87365 516.27 712 716 167.8
C 2 16 11346 63.34 712 716 167.8
D 1 52 392482 2298.1 715 698 170.5
D 11 248 219471 1283.26 715 698 170.5
D 2 250 71268 413.95 715 698 170.5

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