ASTROSAT CZTI

Data Quality Report

Orbit 27359

Creation date: 2024-06-27T19:39:18.689085
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/AS1A09_038T13_9000003928_27359cztM0_level2.evt modeM0/AS1A09_038T13_9000003928_27359cztM0_level2_quad_clean.evt
Size (bytes)401,667,84093,147,840
Size383.1 MB 88.8 MB
Events in quadrant A2,436,359645,602
Events in quadrant B2,416,917652,602
Events in quadrant C4,098,273575,980
Events in quadrant D2,895,524618,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101570
B099900
C0152310
D0116110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4671942.012417%
B46711032.205095%
C467168514.664954%
D46721072.290240%

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 4685 4671 0 0 0.00% 0.00%
B 4685 4671 1 1 0.02% 0.02%
C 4685 4670 428 428 9.14% 9.16%
D 4686 4672 46 46 0.98% 0.98%

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 15 174 83665 699.84 603 593 118.7
A 6 16 23658 194.31 603 593 118.7
A 13 254 8012 62.5 603 593 118.7
B 15 33 23613 209.27 598 586 110.0
B 12 111 12768 110.71 598 586 110.0
B 0 229 11642 100.48 598 586 110.0
C 2 16 1405302 11456.83 537 542 122.6
C 15 208 506712 4128.18 537 542 122.6
C 14 238 89396 724.67 537 542 122.6
D 1 52 591422 4234.52 580 567 139.5
D 2 250 70403 500.5 580 567 139.5
D 2 234 19828 138.04 580 567 139.5

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