ASTROSAT CZTI

Data Quality Report

Orbit 04484

Creation date: 2024-06-27T14:42:43.643992
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/AS1G05_253T03_9000000562_04484cztM0_level2.evt modeM0/AS1G05_253T03_9000000562_04484cztM0_level2_quad_clean.evt
Size (bytes)1,774,929,600277,205,760
Size1.7 GB 264.4 MB
Events in quadrant A12,885,7531,649,670
Events in quadrant B12,280,3671,685,226
Events in quadrant C11,515,1331,680,495
Events in quadrant D15,305,5141,581,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05320
B05320
C05320
D05320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0569356
B0544625
C0533725
D0639995

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A261445862.241432%
B261441890.722919%
C26144520.198898%
D261446592.520655%

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 37854 26148 332 332 0.88% 1.27%
B 37854 26148 22 22 0.06% 0.08%
C 37854 26148 10 10 0.03% 0.04%
D 37854 26148 469 469 1.24% 1.79%

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 0 118 1133610 1902.08 2937 2879 594.5
A 0 13 205377 340.64 2937 2879 594.5
A 0 226 128238 210.87 2937 2879 594.5
B 15 204 164156 281.79 3010 2944 572.1
B 4 48 136991 234.31 3010 2944 572.1
B 4 170 99200 168.25 3010 2944 572.1
C 9 54 129439 188.94 2887 2902 669.7
C 9 16 45201 63.16 2887 2902 669.7
C 13 61 23925 31.39 2887 2902 669.7
D 13 235 1689638 2463.21 2833 2748 684.8
D 14 34 1384774 2018.05 2833 2748 684.8
D 12 79 391202 567.22 2833 2748 684.8

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