ASTROSAT CZTI

Data Quality Report

Orbit 34887

Creation date: 2024-06-27T21:06:37.179188
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/AS1C07_005T01_9000004992_34887cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34887cztM0_level2_quad_clean.evt
Size (bytes)422,881,92069,796,800
Size403.3 MB 66.6 MB
Events in quadrant A2,419,478457,397
Events in quadrant B3,680,310450,304
Events in quadrant C2,703,101451,896
Events in quadrant D3,686,193424,874

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099422
B0139492
C0105772
D0142902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4681390.833155%
B46813216.857509%
C4681641.367229%
D4681761.623585%

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 6804 4682 23 23 0.34% 0.49%
B 6804 4682 250 250 3.67% 5.34%
C 6804 4682 51 51 0.75% 1.09%
D 6804 4682 51 51 0.75% 1.09%

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 15 237 92729 804.73 580 571 114.5
A 10 83 55923 483.34 580 571 114.5
A 13 6 17480 147.65 580 571 114.5
B 5 200 613725 5838.24 570 557 105.0
B 0 190 297154 2824.03 570 557 105.0
B 5 172 234119 2223.84 570 557 105.0
C 15 214 213839 1655.82 565 568 128.8
C 0 10 158296 1224.59 565 568 128.8
C 0 207 102526 791.6 565 568 128.8
D 8 195 838835 5862.77 558 547 143.0
D 2 31 227208 1585.21 558 547 143.0
D 13 249 130486 908.76 558 547 143.0

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