ASTROSAT CZTI

Data Quality Report

Orbit 46521

Creation date: 2024-06-27T23:24:10.781346
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_068T07_9000006222_46521cztM0_level2.fits modeM0/AS1A13_068T07_9000006222_46521cztM0_level2_quad_clean.evt
Size (bytes)639,725,76097,211,520
Size610.1 MB 92.7 MB
Events in quadrant A6,518,286683,769
Events in quadrant B3,392,065720,880
Events in quadrant C9,698,073454,195
Events in quadrant D3,563,084626,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239031
B0142901
C0333784
D0150441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65673355.101264%
B65671822.771433%
C6566254938.821200%
D65681872.847138%

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 7062 6567 51 51 0.72% 0.78%
B 7062 6568 16 16 0.23% 0.24%
C 7063 6568 2541 2541 35.98% 38.69%
D 7063 6568 64 64 0.91% 0.97%

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 3208808 20894.79 735 718 153.5
A 9 191 330775 2149.71 735 718 153.5
A 15 235 39616 253.35 735 718 153.5
B 3 112 113527 762.74 738 714 147.9
B 0 190 56434 376.73 738 714 147.9
B 5 32 52804 352.18 738 714 147.9
C 9 54 7030300 49693.11 602 604 141.5
C 14 254 262875 1854.0 602 604 141.5
C 12 2 22964 158.06 602 604 141.5
D 1 52 297556 1614.57 730 706 183.9
D 11 224 95576 516.0 730 706 183.9
D 13 249 65249 351.05 730 706 183.9

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