ASTROSAT CZTI

Data Quality Report

Orbit 21721

Creation date: 2024-06-27T18:31:35.219691
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/AS1A07_059T01_9000003218_21721cztM0_level2.evt modeM0/AS1A07_059T01_9000003218_21721cztM0_level2_quad_clean.evt
Size (bytes)625,812,48098,222,400
Size596.8 MB 93.7 MB
Events in quadrant A4,209,219603,754
Events in quadrant B3,618,736650,039
Events in quadrant C3,463,757634,575
Events in quadrant D7,174,786586,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173042
B0154862
C0148912
D0263243

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71734476.231702%
B71731251.742646%
C71731401.951764%
D7172114415.950920%

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 8878 7175 352 352 3.96% 4.91%
B 8878 7175 5 5 0.06% 0.07%
C 8878 7175 0 0 0.00% 0.00%
D 8877 7174 763 763 8.60% 10.64%

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 15 236 927422 5434.81 849 832 170.5
A 13 254 12211 66.74 849 832 170.5
A 3 137 7436 38.74 849 832 170.5
B 0 197 100463 599.81 876 851 166.1
B 3 64 43725 258.16 876 851 166.1
B 12 111 20211 116.58 876 851 166.1
C 14 238 136610 678.51 851 855 200.1
C 8 208 6061 26.02 851 855 200.1
C 13 61 5910 25.26 851 855 200.1
D 12 235 2142708 11030.96 808 787 194.2
D 1 52 1360542 7002.78 808 787 194.2
D 1 20 305252 1568.0 808 787 194.2

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