ASTROSAT CZTI

Data Quality Report

Orbit 36748

Creation date: 2024-06-27T21:31:08.460886
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/AS1A11_101T01_9000005238_36748cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36748cztM0_level2_quad_clean.evt
Size (bytes)523,702,08078,598,080
Size499.4 MB 75.0 MB
Events in quadrant A2,820,947516,093
Events in quadrant B3,278,928522,758
Events in quadrant C3,178,743503,679
Events in quadrant D6,200,423444,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121023
B0135222
C0129042
D0222812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5619180.320342%
B56191753.114433%
C5619721.281367%
D5619132523.580708%

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 8726 5621 7 7 0.08% 0.12%
B 8726 5621 62 62 0.71% 1.10%
C 8726 5621 55 55 0.63% 0.98%
D 8725 5620 1268 1268 14.53% 22.56%

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 233496 1769.04 643 629 131.6
A 9 143 75819 571.2 643 629 131.6
A 2 79 10425 74.42 643 629 131.6
B 4 171 445425 3605.12 638 621 123.4
B 5 172 85099 684.69 638 621 123.4
B 0 213 83346 670.48 638 621 123.4
C 14 254 256826 1734.25 626 628 147.7
C 15 214 238363 1609.27 626 628 147.7
C 0 207 178158 1201.73 626 628 147.7
D 12 227 3393961 26262.14 527 513 129.2
D 12 6 380332 2939.45 527 513 129.2
D 13 249 135963 1048.26 527 513 129.2

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