ASTROSAT CZTI

Data Quality Report

Orbit 25452

Creation date: 2024-06-27T19:17:50.223698
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/AS1A09_085T02_9000003716_25452cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25452cztM0_level2_quad_clean.evt
Size (bytes)526,599,360105,698,880
Size502.2 MB 100.8 MB
Events in quadrant A3,552,010686,703
Events in quadrant B3,565,391689,149
Events in quadrant C4,195,609659,418
Events in quadrant D4,135,618653,758

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150730
B0153060
C0171370
D0170240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7362260.353165%
B7362380.516164%
C73632773.762054%
D7363941.276654%

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 7722 7362 0 0 0.00% 0.00%
B 7722 7362 0 0 0.00% 0.00%
C 7723 7363 137 137 1.77% 1.86%
D 7723 7363 46 46 0.60% 0.62%

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 6 16 101804 555.75 894 872 181.6
A 13 254 10601 53.57 894 872 181.6
A 3 137 8198 40.34 894 872 181.6
B 15 32 76890 449.48 880 858 169.2
B 0 229 29195 167.52 880 858 169.2
B 12 111 20956 118.81 880 858 169.2
C 9 54 565609 2876.63 838 843 196.3
C 7 87 218727 1109.79 838 843 196.3
C 14 238 134532 680.94 838 843 196.3
D 7 238 389346 1852.39 862 837 209.7
D 9 35 156167 740.61 862 837 209.7
D 8 195 146880 696.33 862 837 209.7

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