ASTROSAT CZTI

Data Quality Report

Orbit 17460

Creation date: 2024-06-27T17:36:49.683438
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/AS1T03_067T01_9000002582_17460cztM0_level2.evt modeM0/AS1T03_067T01_9000002582_17460cztM0_level2_quad_clean.evt
Size (bytes)566,786,88091,658,880
Size540.5 MB 87.4 MB
Events in quadrant A3,442,310578,792
Events in quadrant B4,268,024579,185
Events in quadrant C3,514,478555,164
Events in quadrant D5,438,652547,811

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152182
B0175863
C0152452
D0211992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7389650.879686%
B73892032.747327%
C7389861.163892%
D73894956.699147%

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 7704 7391 1 1 0.01% 0.01%
B 7704 7391 51 51 0.66% 0.69%
C 7704 7391 0 0 0.00% 0.00%
D 7704 7391 383 383 4.97% 5.18%

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 0 226 7861 38.26 892 870 182.7
A 4 2 7348 35.45 892 870 182.7
A 12 194 6697 31.89 892 870 182.7
B 7 220 313196 1849.08 886 865 168.9
B 4 216 214570 1265.19 886 865 168.9
B 0 189 76444 447.45 886 865 168.9
C 14 238 128802 650.34 846 852 196.7
C 3 233 36025 178.78 846 852 196.7
C 5 218 25082 123.16 846 852 196.7
D 11 176 1370836 6696.61 847 824 204.6
D 13 189 279754 1363.41 847 824 204.6
D 13 232 198813 967.77 847 824 204.6

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