ASTROSAT CZTI

Data Quality Report

Orbit 04699

Creation date: 2024-06-27T14:45:46.881725
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_235T01_9000000590_04699cztM0_level2.evt modeM0/AS1G05_235T01_9000000590_04699cztM0_level2_quad_clean.evt
Size (bytes)2,632,374,720372,510,720
Size2.5 GB 355.3 MB
Events in quadrant A15,878,8132,268,391
Events in quadrant B19,195,9012,243,683
Events in quadrant C20,503,9182,170,780
Events in quadrant D21,737,1712,149,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07240
B07240
C07240
D07240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0734546
B0805485
C0868995
D0898605

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A356337412.079533%
B356339962.795162%
C3563323076.474336%
D3563314213.987876%

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 38603 35637 37 37 0.10% 0.10%
B 38603 35637 160 160 0.41% 0.45%
C 38602 35637 1670 1670 4.33% 4.69%
D 38603 35637 779 779 2.02% 2.19%

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 50 143300 168.69 4055 3961 826.0
A 15 174 63383 71.94 4055 3961 826.0
A 12 194 41515 45.47 4055 3961 826.0
B 4 80 1428577 1816.59 4083 3977 784.2
B 14 167 815355 1034.64 4083 3977 784.2
B 15 204 382649 482.87 4083 3977 784.2
C 9 68 4294331 4755.89 3883 3899 902.1
C 14 48 895954 988.83 3883 3899 902.1
C 8 128 52656 54.05 3883 3899 902.1
D 2 63 1432312 1515.99 3926 3803 942.3
D 13 235 1259129 1332.2 3926 3803 942.3
D 12 233 1067549 1128.89 3926 3803 942.3

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