ASTROSAT CZTI

Data Quality Report

Orbit 32008

Creation date: 2024-06-27T20:35:12.268198
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/AS1A10_109T01_9000004678_32008cztM0_level2.evt modeM0/AS1A10_109T01_9000004678_32008cztM0_level2_quad_clean.evt
Size (bytes)808,367,040109,434,240
Size770.9 MB 104.4 MB
Events in quadrant A3,598,179772,070
Events in quadrant B8,020,273674,098
Events in quadrant C5,913,685669,596
Events in quadrant D6,462,074695,248

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149801
B0290781
C0222241
D0240871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72191361.883917%
B7220148920.623269%
C7220129217.894737%
D72202643.656510%

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 7599 7219 0 0 0.00% 0.00%
B 7600 7220 936 936 12.32% 12.96%
C 7599 7219 524 524 6.90% 7.26%
D 7600 7220 97 97 1.28% 1.34%

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 13 254 13614 67.93 928 911 187.0
A 13 6 10380 50.64 928 911 187.0
A 3 137 9263 44.66 928 911 187.0
B 10 245 2113871 13167.59 832 813 160.5
B 6 159 1724006 10738.13 832 813 160.5
B 12 18 763128 4750.39 832 813 160.5
C 10 22 834843 4280.27 823 829 194.9
C 3 233 718834 3684.89 823 829 194.9
C 0 10 697805 3576.97 823 829 194.9
D 8 195 2566960 12033.53 892 870 213.2
D 2 250 440864 2063.33 892 870 213.2
D 10 253 47886 220.48 892 870 213.2

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