ASTROSAT CZTI

Data Quality Report

Orbit 51308

Creation date: 2025-03-24T07:11:48.981669
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_001T03_9000006456_51308cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51308cztM0_level2_quad_clean.evt
Size (bytes)727,341,120103,276,800
Size693.6 MB 98.5 MB
Events in quadrant A5,371,180685,365
Events in quadrant B4,475,341757,572
Events in quadrant C6,812,539624,587
Events in quadrant D9,704,634554,383

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210032
B0184452
C0252772
D0338842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72521421.958081%
B72511722.372087%
C725194513.032685%
D7251117616.218453%

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 9477 7254 35 35 0.37% 0.48%
B 9476 7253 73 73 0.77% 1.01%
C 9476 7253 757 757 7.99% 10.44%
D 9476 7253 1322 1322 13.95% 18.23%

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 3 1436724 7696.69 758 740 186.6
A 4 3 234840 1254.75 758 740 186.6
A 9 191 191541 1022.67 758 740 186.6
B 10 254 391337 2410.58 766 739 162.0
B 5 185 285223 1755.69 766 739 162.0
B 5 172 135393 831.02 766 739 162.0
C 4 12 3108303 15673.23 718 713 198.3
C 13 3 181378 911.19 718 713 198.3
C 12 252 140444 704.74 718 713 198.3
D 8 176 3923731 20059.15 700 675 195.6
D 12 2 1093797 5589.29 700 675 195.6
D 3 12 479885 2450.27 700 675 195.6

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