ASTROSAT CZTI

Data Quality Report

Orbit 21191

Creation date: 2024-06-27T18:24:45.028476
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/AS1A06_002T01_9000003134_21191cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21191cztM0_level2_quad_clean.evt
Size (bytes)570,176,64095,685,120
Size543.8 MB 91.3 MB
Events in quadrant A3,168,818637,351
Events in quadrant B3,510,307652,584
Events in quadrant C3,203,641615,628
Events in quadrant D6,965,760559,256

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132722
B0143872
C0132992
D0251675

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6201580.935333%
B62011011.628770%
C62011161.870666%
D62004827.774194%

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 7586 6202 0 0 0.00% 0.00%
B 7586 6202 13 13 0.17% 0.21%
C 7586 6202 4 4 0.05% 0.06%
D 7585 6200 350 350 4.61% 5.65%

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 10598 59.65 818 806 164.2
A 13 252 7975 43.67 818 806 164.2
A 0 226 7400 40.17 818 806 164.2
B 0 182 174518 1124.08 822 802 154.5
B 0 219 34601 218.71 822 802 154.5
B 3 64 31117 196.16 822 802 154.5
C 14 238 122947 675.46 777 783 180.9
C 0 10 44000 238.95 777 783 180.9
C 3 233 6564 31.96 777 783 180.9
D 1 20 2706077 14795.17 755 734 182.9
D 1 52 806850 4408.54 755 734 182.9
D 12 233 213558 1163.91 755 734 182.9

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