ASTROSAT CZTI

Data Quality Report

Orbit 38863

Creation date: 2024-06-27T21:57:24.205792
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/AS1A12_077T06_9000005408_38863cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38863cztM0_level2_quad_clean.evt
Size (bytes)382,262,40095,650,560
Size364.6 MB 91.2 MB
Events in quadrant A3,045,153663,116
Events in quadrant B2,976,484674,175
Events in quadrant C2,801,040641,768
Events in quadrant D4,891,510525,541

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125573
B0125982
C0117302
D0181802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5600280.500000%
B5600470.839286%
C5600120.214286%
D560077313.803571%

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 7332 5601 8 8 0.11% 0.14%
B 7332 5601 26 26 0.35% 0.46%
C 7332 5601 6 6 0.08% 0.11%
D 7332 5601 704 704 9.60% 12.57%

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 436726 3268.4 651 639 133.4
A 13 248 77156 573.48 651 639 133.4
A 13 254 10773 75.95 651 639 133.4
B 5 200 141423 1127.95 647 629 124.8
B 4 171 129745 1034.39 647 629 124.8
B 0 230 99404 791.32 647 629 124.8
C 15 214 232129 1550.6 638 642 149.3
C 0 10 37288 245.47 638 642 149.3
C 14 254 32448 213.05 638 642 149.3
D 2 250 2042285 14053.16 597 583 145.3
D 12 235 140264 961.43 597 583 145.3
D 2 249 139635 957.1 597 583 145.3

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