ASTROSAT CZTI

Data Quality Report

Orbit 31305

Creation date: 2024-06-27T20:26:26.123254
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_058T08_9000004532_31305cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31305cztM0_level2_quad_clean.evt
Size (bytes)537,284,16094,584,960
Size512.4 MB 90.2 MB
Events in quadrant A3,217,889619,549
Events in quadrant B5,241,896612,247
Events in quadrant C3,806,778580,925
Events in quadrant D3,556,107589,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137042
B0206272
C0154222
D0150143

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6628420.633675%
B66281592.398914%
C66281732.610139%
D6627340.513053%

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 7678 6629 0 0 0.00% 0.00%
B 7678 6629 29 29 0.38% 0.44%
C 7678 6629 27 27 0.35% 0.41%
D 7677 6628 3 3 0.04% 0.05%

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 10859 60.24 834 817 166.7
A 3 137 8644 46.95 834 817 166.7
A 0 226 6991 37.04 834 817 166.7
B 6 159 1723861 10942.84 817 797 157.5
B 4 80 177589 1122.77 817 797 157.5
B 15 33 102099 643.35 817 797 157.5
C 3 233 457218 2474.57 785 790 184.4
C 0 10 137330 740.27 785 790 184.4
C 14 238 129031 695.27 785 790 184.4
D 8 195 498557 2454.57 796 778 202.8
D 2 234 21963 104.46 796 778 202.8
D 2 250 19541 92.52 796 778 202.8

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