ASTROSAT CZTI

Data Quality Report

Orbit 15285

Creation date: 2024-06-27T17:06:15.279283
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/AS1A04_223T01_9000002258_15285cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15285cztM0_level2_quad_clean.evt
Size (bytes)246,631,68034,591,680
Size235.2 MB 33.0 MB
Events in quadrant A1,736,535206,543
Events in quadrant B1,965,472211,147
Events in quadrant C1,825,891202,112
Events in quadrant D1,715,255192,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071842
B078811
C074141
D072541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33031273.844989%
B33031494.511051%
C33031073.239479%
D33031163.511959%

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 4589 3304 1 1 0.02% 0.03%
B 4589 3304 10 10 0.22% 0.30%
C 4589 3304 0 0 0.00% 0.00%
D 4589 3304 5 5 0.11% 0.15%

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 9 143 6698 67.45 449 439 92.8
A 0 226 4080 39.24 449 439 92.8
A 12 189 3479 32.76 449 439 92.8
B 4 142 79223 907.36 446 436 86.8
B 10 16 59865 684.42 446 436 86.8
B 0 219 24608 278.38 446 436 86.8
C 3 233 134392 1307.78 433 436 102.4
C 4 238 4671 41.35 433 436 102.4
C 13 61 3139 26.39 433 436 102.4
D 10 70 38167 350.52 433 420 107.7
D 8 195 14411 129.92 433 420 107.7
D 2 234 12428 111.51 433 420 107.7

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