ASTROSAT CZTI

Data Quality Report

Orbit 06786

Creation date: 2024-06-27T15:11:39.078356
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/AS1G06_086T02_9000000936_06786cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06786cztM0_level2_quad_clean.evt
Size (bytes)2,542,302,720360,768,960
Size2.4 GB 344.1 MB
Events in quadrant A15,430,2982,200,941
Events in quadrant B15,522,2442,231,052
Events in quadrant C15,714,0462,186,410
Events in quadrant D28,091,1252,029,672

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0686667
B0681866
C0693376
D01057776

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06740
B06740
C06740
D06740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A331532960.892830%
B331532640.796308%
C331533811.149217%
D3315332899.920671%

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 38378 33159 17 17 0.04% 0.05%
B 38378 33159 5 5 0.01% 0.02%
C 38378 33159 118 118 0.31% 0.36%
D 38378 33159 2742 2742 7.14% 8.27%

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 287020 356.89 3902 3817 793.5
A 13 248 81487 97.88 3902 3817 793.5
A 15 239 47859 55.5 3902 3817 793.5
B 4 81 77696 99.36 3925 3832 743.4
B 12 111 76379 97.59 3925 3832 743.4
B 0 228 69646 88.54 3925 3832 743.4
C 9 247 764799 868.68 3799 3819 876.0
C 12 16 45322 47.38 3799 3819 876.0
C 9 16 34746 35.3 3799 3819 876.0
D 2 63 10451678 11559.36 3697 3581 903.9
D 8 195 1893091 2090.48 3697 3581 903.9
D 2 152 1182290 1304.08 3697 3581 903.9

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