ASTROSAT CZTI

Data Quality Report

Orbit 14810

Creation date: 2024-06-27T16:59:59.606347
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/AS1G08_010T02_9000002188_14810cztM0_level2.evt modeM0/AS1G08_010T02_9000002188_14810cztM0_level2_quad_clean.evt
Size (bytes)270,947,52045,875,520
Size258.4 MB 43.8 MB
Events in quadrant A1,867,746292,917
Events in quadrant B2,170,300286,660
Events in quadrant C2,066,774282,507
Events in quadrant D1,860,197277,349

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076582
B086031
C083321
D078231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3522621.760363%
B35222045.792164%
C3522491.391255%
D3522541.533220%

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 4168 3524 0 0 0.00% 0.00%
B 4168 3524 50 50 1.20% 1.42%
C 4168 3524 6 6 0.14% 0.17%
D 4168 3524 22 22 0.53% 0.62%

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 12 189 54357 555.9 469 457 97.0
A 14 237 6998 67.46 469 457 97.0
A 0 226 4150 38.09 469 457 97.0
B 15 222 193750 2125.59 458 447 90.9
B 3 64 86883 950.46 458 447 90.9
B 4 173 50167 546.73 458 447 90.9
C 3 233 279489 2611.14 449 451 106.9
C 0 207 36800 340.14 449 451 106.9
C 13 61 3257 26.26 449 451 106.9
D 7 254 86799 701.45 448 437 123.1
D 13 249 27508 219.87 448 437 123.1
D 10 70 16522 130.64 448 437 123.1

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