ASTROSAT CZTI

Data Quality Report

Orbit 42091

Creation date: 2024-06-27T22:36:43.769501
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/AS1A12_044T22_9000005740_42091cztM0_level2.fits modeM0/AS1A12_044T22_9000005740_42091cztM0_level2_quad_clean.evt
Size (bytes)577,255,680134,504,640
Size550.5 MB 128.3 MB
Events in quadrant A7,130,467894,132
Events in quadrant B3,850,958923,140
Events in quadrant C3,939,448883,059
Events in quadrant D5,790,127783,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268162
B0175022
C0170322
D0228982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84712933.458860%
B8471620.731909%
C847280.094429%
D84724275.040132%

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 11098 8473 253 253 2.28% 2.99%
B 11098 8473 41 41 0.37% 0.48%
C 11099 8474 2 2 0.02% 0.02%
D 11099 8474 337 337 3.04% 3.98%

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 15 222 1801008 9468.39 923 904 190.1
A 15 223 942809 4954.34 923 904 190.1
A 10 83 764707 4017.54 923 904 190.1
B 5 255 187743 1044.54 921 892 178.9
B 3 112 37728 205.92 921 892 178.9
B 12 111 23085 124.06 921 892 178.9
C 15 214 343091 1610.54 908 912 212.5
C 8 79 36827 169.04 908 912 212.5
C 15 159 12731 55.63 908 912 212.5
D 1 52 706543 3221.25 892 868 219.1
D 12 6 492502 2244.2 892 868 219.1
D 2 249 457610 2084.93 892 868 219.1

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