ASTROSAT CZTI

Data Quality Report

Orbit 27546

Creation date: 2024-06-27T19:41:21.591916
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/AS1A09_038T29_9000003954_27546cztM0_level2.evt modeM0/AS1A09_038T29_9000003954_27546cztM0_level2_quad_clean.evt
Size (bytes)574,041,600115,842,240
Size547.4 MB 110.5 MB
Events in quadrant A3,245,123789,402
Events in quadrant B4,526,635777,888
Events in quadrant C3,601,853787,789
Events in quadrant D5,587,655716,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131750
B0172330
C0143650
D0206920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A624670.112072%
B62475088.131903%
C62471231.968945%
D624667010.726865%

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 7637 6248 0 0 0.00% 0.00%
B 7638 6249 435 435 5.70% 6.96%
C 7638 6249 56 56 0.73% 0.90%
D 7637 6247 576 576 7.54% 9.22%

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 10086 55.84 841 828 165.8
A 0 226 7200 38.44 841 828 165.8
A 3 137 7082 37.72 841 828 165.8
B 10 245 1243214 8320.83 814 795 149.3
B 4 52 46502 306.11 814 795 149.3
B 3 64 21850 141.01 814 795 149.3
C 2 16 217441 1133.67 831 839 191.1
C 14 238 137855 717.13 831 839 191.1
C 8 208 9277 44.16 831 839 191.1
D 1 52 2479672 13296.5 797 779 186.4
D 6 112 68946 365.64 797 779 186.4
D 2 234 21115 109.08 797 779 186.4

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