ASTROSAT CZTI

Data Quality Report

Orbit 47289

Creation date: 2024-06-27T23:33:48.164748
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_025T01_9000006312_47289cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47289cztM0_level2_quad_clean.evt
Size (bytes)123,739,20024,707,520
Size118.0 MB 23.6 MB
Events in quadrant A1,786,453148,012
Events in quadrant B957,355171,414
Events in quadrant C719,453164,542
Events in quadrant D990,235145,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114
B081
C0113
D082

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115075082
B062822293
C056592212
D064292209

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05517
B05722
C05820
D05620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1515855.610561%
B1629533.253530%
C163390.551133%
D1622905.548705%

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 2782 1618 3 3 0.11% 0.19%
B 2797 1756 2 2 0.07% 0.11%
C 2803 1747 0 0 0.00% 0.00%
D 2842 1742 63 63 2.22% 3.62%

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 10 83 790879 22680.03 158 154 34.9
A 15 235 342780 9827.4 158 154 34.9
A 9 191 40402 1154.42 158 154 34.9
B 0 200 94061 2457.38 180 175 38.2
B 4 171 93920 2453.69 180 175 38.2
B 0 190 30507 793.91 180 175 38.2
C 14 254 19405 432.45 177 178 44.5
C 10 20 2138 44.08 177 178 44.5
C 5 4 1867 37.99 177 178 44.5
D 1 232 183006 4075.89 170 164 44.9
D 7 38 98981 2202.82 170 164 44.9
D 14 34 18093 399.67 170 164 44.9

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