ASTROSAT CZTI

Data Quality Report

Orbit 11739

Creation date: 2024-06-27T16:17:38.452057
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_006T03_9000001732_11739cztM0_level2.evt modeM0/AS1G08_006T03_9000001732_11739cztM0_level2_quad_clean.evt
Size (bytes)484,560,00098,982,720
Size462.1 MB 94.4 MB
Events in quadrant A3,568,839648,557
Events in quadrant B4,251,982652,330
Events in quadrant C2,824,950663,416
Events in quadrant D3,631,167623,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144442
B0163861
C0120041
D0146331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5866891.517218%
B58663265.557450%
C5866340.579611%
D5866741.261507%

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 7167 5868 17 17 0.24% 0.29%
B 7167 5868 167 167 2.33% 2.85%
C 7167 5868 0 0 0.00% 0.00%
D 7167 5868 30 30 0.42% 0.51%

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 13 251 186682 1276.02 730 718 145.7
A 9 143 148614 1014.81 730 718 145.7
A 1 162 126571 863.56 730 718 145.7
B 4 239 606409 4556.51 725 708 132.9
B 3 64 335161 2515.99 725 708 132.9
B 15 204 276458 2074.39 725 708 132.9
C 13 61 5427 28.72 723 727 163.6
C 12 4 3874 19.23 723 727 163.6
C 3 202 1852 6.88 723 727 163.6
D 8 195 557306 3283.39 714 697 169.5
D 4 95 82195 480.75 714 697 169.5
D 5 222 64496 376.34 714 697 169.5

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