ASTROSAT CZTI

Data Quality Report

Orbit 15478

Creation date: 2024-06-27T17:09:09.401567
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/AS1T02_082T01_9000002286_15478cztM0_level2.evt modeM0/AS1T02_082T01_9000002286_15478cztM0_level2_quad_clean.evt
Size (bytes)529,525,440111,035,520
Size505.0 MB 105.9 MB
Events in quadrant A3,581,251723,328
Events in quadrant B4,119,003723,896
Events in quadrant C3,664,349701,540
Events in quadrant D4,159,705688,794

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157913
B0170952
C0158132
D0176242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7553390.516351%
B7553951.257778%
C7553821.085661%
D75531181.562293%

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 7839 7555 4 4 0.05% 0.05%
B 7839 7555 22 22 0.28% 0.29%
C 7839 7555 4 4 0.05% 0.05%
D 7839 7555 65 65 0.83% 0.86%

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 14 238 78691 430.28 892 875 180.8
A 9 143 33692 181.46 892 875 180.8
A 13 248 13776 71.34 892 875 180.8
B 7 220 110124 641.9 893 870 170.2
B 10 245 104828 610.78 893 870 170.2
B 0 197 80718 469.13 893 870 170.2
C 3 233 205352 1031.2 846 851 198.3
C 14 238 131256 657.57 846 851 198.3
C 8 128 10374 48.02 846 851 198.3
D 2 33 309662 1454.66 857 830 212.3
D 1 52 169317 793.61 857 830 212.3
D 5 222 166383 779.79 857 830 212.3

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