ASTROSAT CZTI

Data Quality Report

Orbit 29267

Creation date: 2024-06-27T20:02:02.650180
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_045T08_9000004208_29267cztM0_level2.evt modeM0/AS1A10_045T08_9000004208_29267cztM0_level2_quad_clean.evt
Size (bytes)626,310,72072,164,160
Size597.3 MB 68.8 MB
Events in quadrant A3,168,904466,709
Events in quadrant B3,838,121472,331
Events in quadrant C7,549,081383,067
Events in quadrant D4,011,509448,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128821
B0153221
C0266441
D0156532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5913711.200744%
B59141031.741630%
C5914163827.696990%
D59131843.111788%

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 7128 5914 0 0 0.00% 0.00%
B 7129 5915 6 6 0.08% 0.10%
C 7129 5914 564 564 7.91% 9.54%
D 7128 5914 128 128 1.80% 2.16%

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 11224 64.33 820 807 161.9
A 3 137 7287 40.02 820 807 161.9
A 0 226 6977 38.1 820 807 161.9
B 0 183 343831 2270.02 800 783 151.1
B 10 245 182954 1205.46 800 783 151.1
B 0 229 155813 1025.87 800 783 151.1
C 3 233 4365462 26876.46 702 710 162.4
C 14 238 243911 1497.54 702 710 162.4
C 14 254 188777 1158.04 702 710 162.4
D 1 52 531899 2592.71 785 773 204.9
D 7 238 195875 952.4 785 773 204.9
D 8 195 113336 549.48 785 773 204.9

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