ASTROSAT CZTI

Data Quality Report

Orbit 14306

Creation date: 2024-06-27T16:53:17.767665
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_078T01_9000002110_14306cztM0_level2.evt modeM0/AS1G08_078T01_9000002110_14306cztM0_level2_quad_clean.evt
Size (bytes)285,027,84040,734,720
Size271.8 MB 38.8 MB
Events in quadrant A2,024,691245,808
Events in quadrant B1,917,024246,308
Events in quadrant C2,141,610241,493
Events in quadrant D2,293,333234,831

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082202
B079841
C086431
D092151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3744391.041667%
B3744441.175214%
C3744381.014957%
D37441153.071581%

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 4165 3746 1 1 0.02% 0.03%
B 4165 3746 4 4 0.10% 0.11%
C 4165 3746 0 0 0.00% 0.00%
D 4165 3746 55 55 1.32% 1.47%

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 13 210 73960 751.89 471 461 97.8
A 12 189 70392 715.39 471 461 97.8
A 8 15 63954 649.53 471 461 97.8
B 0 189 29982 321.95 466 454 91.7
B 0 229 28412 304.83 466 454 91.7
B 0 219 16357 173.39 466 454 91.7
C 3 233 382378 3594.89 450 452 106.2
C 13 61 3363 27.4 450 452 106.2
C 3 232 2783 21.94 450 452 106.2
D 5 222 347240 3159.11 451 440 109.8
D 12 110 178293 1620.12 451 440 109.8
D 2 152 16711 148.22 451 440 109.8

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