ASTROSAT CZTI

Data Quality Report

Orbit 44903

Creation date: 2024-06-27T23:07:49.261021
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/AS1A13_017T02_9000006032_44903cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44903cztM0_level2_quad_clean.evt
Size (bytes)2,302,482,240389,678,400
Size2.1 GB 371.6 MB
Events in quadrant A19,650,3542,694,957
Events in quadrant B14,606,6982,751,242
Events in quadrant C16,452,8672,646,756
Events in quadrant D32,570,1271,962,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05140
B05140
C05140
D05140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0787294
B0607477
C0658744
D011441115

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A253105382.125642%
B253087973.149202%
C253106902.726195%
D25308615324.312470%

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 26845 25315 114 114 0.42% 0.45%
B 26845 25314 276 276 1.03% 1.09%
C 26845 25315 662 662 2.47% 2.62%
D 26845 25313 4771 4771 17.77% 18.85%

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 10 83 7827394 13211.16 2859 2802 592.3
A 13 248 744040 1251.52 2859 2802 592.3
A 13 254 34507 53.53 2859 2802 592.3
B 0 219 1893332 3371.95 2844 2748 560.7
B 0 190 263808 465.61 2844 2748 560.7
B 0 155 194722 342.4 2844 2748 560.7
C 9 54 5076208 7678.2 2797 2819 660.8
C 15 208 212908 317.95 2797 2819 660.8
C 1 3 70253 102.06 2797 2819 660.8
D 12 33 7072726 10769.06 2557 2480 656.5
D 13 187 4766378 7256.14 2557 2480 656.5
D 13 249 2406251 3661.31 2557 2480 656.5

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