ASTROSAT CZTI

Data Quality Report

Orbit 14285

Creation date: 2024-06-27T16:52:55.283792
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/AS1G08_014T01_9000002104_14285cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14285cztM0_level2_quad_clean.evt
Size (bytes)555,719,040102,407,040
Size530.0 MB 97.7 MB
Events in quadrant A3,386,354677,952
Events in quadrant B3,946,339678,028
Events in quadrant C3,849,746649,792
Events in quadrant D5,201,850636,402

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138292
B0157071
C0153861
D0197801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6584490.744228%
B65841502.278250%
C6584430.653098%
D65841021.549210%

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 7855 6586 0 0 0.00% 0.00%
B 7855 6586 57 57 0.73% 0.87%
C 7855 6586 3 3 0.04% 0.05%
D 7855 6586 53 53 0.67% 0.80%

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 12 189 33775 188.27 871 855 174.9
A 0 226 7742 39.39 871 855 174.9
A 12 194 6647 33.13 871 855 174.9
B 10 245 365716 2291.18 853 834 159.3
B 0 229 165623 1034.75 853 834 159.3
B 10 244 29410 179.44 853 834 159.3
C 3 233 578474 2996.13 838 847 192.8
C 13 61 5998 26.72 838 847 192.8
C 10 22 3524 13.89 838 847 192.8
D 12 110 1724246 8604.52 845 828 200.3
D 5 222 202094 1004.86 845 828 200.3
D 2 152 41416 202.64 845 828 200.3

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