ASTROSAT CZTI

Data Quality Report

Orbit 44286

Creation date: 2024-06-27T23:01:23.096427
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/AS1A13_077T01_9000005984_44286cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44286cztM0_level2_quad_clean.evt
Size (bytes)510,952,320114,287,040
Size487.3 MB 109.0 MB
Events in quadrant A6,463,708738,354
Events in quadrant B3,747,353809,050
Events in quadrant C3,479,403772,984
Events in quadrant D4,727,266694,248

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240352
B0152482
C0144072
D0183032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A639279412.421777%
B63931572.455811%
C63931091.704990%
D63923305.162703%

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 7602 6393 477 477 6.27% 7.46%
B 7603 6394 39 39 0.51% 0.61%
C 7603 6393 30 30 0.39% 0.47%
D 7602 6393 214 214 2.82% 3.35%

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 15 223 1771922 11097.99 775 759 159.6
A 10 83 1655802 10370.39 775 759 159.6
A 7 3 14729 87.53 775 759 159.6
B 0 219 177664 1130.44 794 772 156.5
B 0 200 97034 615.17 794 772 156.5
B 0 155 86101 545.3 794 772 156.5
C 14 254 273461 1467.99 790 796 185.7
C 3 233 55347 293.69 790 796 185.7
C 1 3 39101 206.23 790 796 185.7
D 1 52 580444 2974.09 779 757 194.9
D 13 249 458748 2349.73 779 757 194.9
D 2 120 224051 1145.61 779 757 194.9

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