ASTROSAT CZTI

Data Quality Report

Orbit 50729

Creation date: 2025-02-24T11:29:07.477660
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/AS1C07_001T01_9000006450_50729cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50729cztM0_level2_quad_clean.evt
Size (bytes)723,251,520103,233,600
Size689.7 MB 98.5 MB
Events in quadrant A5,720,686682,111
Events in quadrant B4,130,443786,490
Events in quadrant C11,525,716477,226
Events in quadrant D4,792,836638,738

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01602

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022654147
B01800731
C03972886
D02001386

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B051
C051
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77704966.383526%
B77821722.210229%
C7776285936.766975%
D77722683.448276%

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 8040 7773 541 541 6.73% 6.96%
B 8040 7790 66 66 0.82% 0.85%
C 8040 7785 2315 2315 28.79% 29.74%
D 8038 7784 236 236 2.94% 3.03%

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 12 80 1752614 8658.88 806 784 202.3
A 5 240 116511 572.01 806 784 202.3
A 8 61 106859 524.3 806 784 202.3
B 10 247 129071 732.71 823 793 175.1
B 8 128 123654 701.77 823 793 175.1
B 0 200 121356 688.65 823 793 175.1
C 5 10 6098023 33294.41 666 661 183.1
C 9 38 1460251 7970.03 666 661 183.1
C 15 231 194200 1056.81 666 661 183.1
D 1 47 618936 2803.68 784 754 220.5
D 2 249 252741 1142.85 784 754 220.5
D 7 96 170708 770.8 784 754 220.5

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