ASTROSAT CZTI

Data Quality Report

Orbit 18340

Creation date: 2024-06-27T17:48:34.364666
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_006T01_9000002720_18340cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18340cztM0_level2_quad_clean.evt
Size (bytes)492,704,64071,303,040
Size469.9 MB 68.0 MB
Events in quadrant A3,541,921434,692
Events in quadrant B3,560,425440,152
Events in quadrant C3,539,658428,545
Events in quadrant D3,857,909421,722

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140822
B0141532
C0141842
D0153542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62081512.432345%
B62081151.852448%
C62081642.641753%
D62081071.723582%

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 7483 6209 65 65 0.87% 1.05%
B 7483 6209 11 11 0.15% 0.18%
C 7483 6209 18 18 0.24% 0.29%
D 7483 6209 13 13 0.17% 0.21%

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 4 2 264810 1563.72 839 823 168.8
A 15 174 29994 172.79 839 823 168.8
A 14 237 25040 143.45 839 823 168.8
B 7 220 220034 1381.79 843 821 158.6
B 12 111 17228 103.42 843 821 158.6
B 11 111 14697 87.46 843 821 158.6
C 3 233 178077 949.53 809 816 186.7
C 14 238 126742 674.54 809 816 186.7
C 0 207 82876 439.57 809 816 186.7
D 1 52 475679 2385.4 823 802 199.1
D 14 34 169898 849.4 823 802 199.1
D 13 104 35720 175.4 823 802 199.1

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