ASTROSAT CZTI

Data Quality Report

Orbit 42854

Creation date: 2024-06-27T22:45:01.869080
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_138T01_9000005828_42854cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42854cztM0_level2_quad_clean.evt
Size (bytes)400,190,40082,592,640
Size381.7 MB 78.8 MB
Events in quadrant A2,866,203568,317
Events in quadrant B5,288,789498,523
Events in quadrant C3,064,884557,298
Events in quadrant D3,188,592511,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117292
B0193472
C0123722
D0130262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5207180.345688%
B520791617.591703%
C52071562.995967%
D5207771.478779%

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 7030 5208 10 10 0.14% 0.19%
B 7030 5208 801 801 11.39% 15.38%
C 7030 5208 158 158 2.25% 3.03%
D 7030 5208 74 74 1.05% 1.42%

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 556628 4740.19 565 553 117.3
A 12 189 65524 553.84 565 553 117.3
A 15 237 31518 263.96 565 553 117.3
B 4 81 3110711 29975.94 530 515 103.8
B 5 255 37807 359.42 530 515 103.8
B 4 171 20713 194.67 530 515 103.8
C 12 2 539916 4176.78 551 556 129.1
C 15 214 208908 1613.47 551 556 129.1
C 14 254 119244 919.11 551 556 129.1
D 12 6 444651 3278.68 548 533 135.5
D 1 52 203987 1501.99 548 533 135.5
D 2 249 115065 845.53 548 533 135.5

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