ASTROSAT CZTI

Data Quality Report

Orbit 02496

Creation date: 2024-06-27T14:18:41.789948
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/AS1T01_046T01_9000000372_02496cztM0_level2.fits modeM0/AS1T01_046T01_9000000372_02496cztM0_level2_quad_clean.evt
Size (bytes)424,514,880122,273,280
Size404.8 MB 116.6 MB
Events in quadrant A3,769,831807,612
Events in quadrant B3,585,177829,685
Events in quadrant C3,452,903795,594
Events in quadrant D4,297,251725,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169723
B0162452
C0160302
D0187362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78182192.801228%
B78181662.123305%
C78181421.816321%
D78183344.272192%

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 8498 7820 6 6 0.07% 0.08%
B 8498 7820 1 1 0.01% 0.01%
C 8498 7820 0 0 0.00% 0.00%
D 8498 7820 160 160 1.88% 2.05%

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 8 15 251114 1355.11 893 869 184.7
A 12 133 83642 448.22 893 869 184.7
A 12 194 9868 48.73 893 869 184.7
B 7 205 61653 344.92 907 881 176.2
B 12 111 12799 67.64 907 881 176.2
B 11 111 11040 57.66 907 881 176.2
C 8 208 11617 52.24 873 873 205.7
C 10 65 10434 46.49 873 873 205.7
C 13 61 8100 35.14 873 873 205.7
D 2 184 498969 2422.2 859 835 205.7
D 12 110 172823 836.3 859 835 205.7
D 13 238 118636 572.81 859 835 205.7

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