ASTROSAT CZTI

Data Quality Report

Orbit 42581

Creation date: 2024-06-27T22:41:50.356604
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_061T07_9000005818_42581cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42581cztM0_level2_quad_clean.evt
Size (bytes)334,186,56093,182,400
Size318.7 MB 88.9 MB
Events in quadrant A3,096,096618,935
Events in quadrant B2,709,501630,071
Events in quadrant C2,662,738609,408
Events in quadrant D3,449,116556,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125567
B0121503
C0116872
D0142435

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5814140.240798%
B5815360.619089%
C581620.034388%
D58141071.840385%

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 7129 5817 5 5 0.07% 0.09%
B 7128 5817 14 14 0.20% 0.24%
C 7128 5817 0 0 0.00% 0.00%
D 7128 5816 98 98 1.37% 1.69%

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 628205 4840.26 629 616 129.7
A 13 6 9858 71.28 629 616 129.7
A 15 237 7475 52.9 629 616 129.7
B 0 245 77734 636.29 624 606 121.2
B 3 112 47125 383.77 624 606 121.2
B 5 172 46967 382.47 624 606 121.2
C 15 214 240560 1668.77 613 616 143.8
C 12 249 14159 94.19 613 616 143.8
C 3 233 9369 60.88 613 616 143.8
D 1 52 491849 3283.23 611 593 149.6
D 2 249 158509 1055.41 611 593 149.6
D 12 233 117213 779.41 611 593 149.6

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