ASTROSAT CZTI

Data Quality Report

Orbit 39775

Creation date: 2024-06-27T22:08:52.332657
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/AS1T05_086T01_9000005496_39775cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39775cztM0_level2_quad_clean.evt
Size (bytes)411,428,16099,861,120
Size392.4 MB 95.2 MB
Events in quadrant A2,996,769695,598
Events in quadrant B2,941,689706,604
Events in quadrant C5,716,037621,494
Events in quadrant D3,144,353612,396

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120932
B0122211
C0208031
D0132061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5544120.216450%
B5544420.757576%
C554460310.876623%
D5544801.443001%

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 7218 5545 4 4 0.06% 0.07%
B 7218 5545 24 24 0.33% 0.43%
C 7218 5545 539 539 7.47% 9.72%
D 7218 5545 68 68 0.94% 1.23%

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 10 83 466030 3444.01 649 639 135.1
A 2 79 15656 111.13 649 639 135.1
A 13 6 8900 61.13 649 639 135.1
B 5 172 276571 2151.68 643 627 128.2
B 0 190 99072 767.63 643 627 128.2
B 4 170 19523 147.34 643 627 128.2
C 15 208 1777439 12345.87 606 613 143.9
C 9 187 1207533 8386.01 606 613 143.9
C 15 214 223774 1550.58 606 613 143.9
D 12 233 332652 2114.01 626 611 157.1
D 12 227 114168 722.98 626 611 157.1
D 13 171 111890 708.48 626 611 157.1

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