ASTROSAT CZTI

Data Quality Report

Orbit 36682

Creation date: 2024-06-27T21:30:13.092686
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_041T01_9000005234_36682cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36682cztM0_level2_quad_clean.evt
Size (bytes)401,561,280102,487,680
Size383.0 MB 97.7 MB
Events in quadrant A2,593,144691,507
Events in quadrant B3,218,741698,084
Events in quadrant C2,900,664703,460
Events in quadrant D3,113,685665,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106503
B0127232
C0114352
D0123462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493370.141901%
B4933821.662274%
C4933951.925806%
D49331422.878573%

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 7056 4934 1 1 0.01% 0.02%
B 7056 4934 45 45 0.64% 0.91%
C 7056 4934 62 62 0.88% 1.26%
D 7056 4934 124 124 1.76% 2.51%

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 204816 1708.02 600 589 119.6
A 15 223 51016 421.74 600 589 119.6
A 13 254 8687 67.73 600 589 119.6
B 0 189 492022 4467.52 588 574 110.0
B 5 255 276598 2509.2 588 574 110.0
B 0 190 63205 569.35 588 574 110.0
C 0 10 334873 2476.45 589 594 135.0
C 15 214 227295 1679.47 589 594 135.0
C 14 254 13882 98.44 589 594 135.0
D 13 249 267413 1881.68 588 573 141.8
D 13 171 154081 1082.5 588 573 141.8
D 7 38 98731 692.18 588 573 141.8

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