ASTROSAT CZTI

Data Quality Report

Orbit 50978

Creation date: 2025-03-02T03:54:13.854303
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_001T02_9000006452_50978cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50978cztM0_level2_quad_clean.evt
Size (bytes)1,079,712,00087,295,680
Size1.0 GB 83.3 MB
Events in quadrant A5,063,692712,755
Events in quadrant B7,425,675656,158
Events in quadrant C12,425,620379,423
Events in quadrant D14,453,344354,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204000
B0276010
C0422120
D0483020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77561872.411037%
B7757134717.364961%
C7757380849.091143%
D7757380649.065360%

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 7756 7756 155 155 2.00% 2.00%
B 7757 7757 926 926 11.94% 11.94%
C 7757 7757 3162 3162 40.76% 40.76%
D 7757 7757 3460 3460 44.60% 44.60%

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 43 488773 2411.45 810 789 202.4
A 14 254 258222 1272.15 810 789 202.4
A 4 3 237819 1171.32 810 789 202.4
B 0 172 2785184 17233.72 761 736 161.6
B 4 81 929545 5748.66 761 736 161.6
B 8 234 122792 755.44 761 736 161.6
C 0 177 7800479 46647.85 587 582 167.2
C 0 193 421828 2519.29 587 582 167.2
C 15 158 318529 1901.5 587 582 167.2
D 8 176 2781150 16838.82 589 569 165.1
D 7 60 2776783 16812.37 589 569 165.1
D 7 39 2673839 16188.96 589 569 165.1

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