ASTROSAT CZTI

Data Quality Report

Orbit 25143

Creation date: 2024-06-27T19:14:20.624047
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/AS1A07_018T07_9000003680_25143cztM0_level2.evt modeM0/AS1A07_018T07_9000003680_25143cztM0_level2_quad_clean.evt
Size (bytes)487,434,24099,213,120
Size464.9 MB 94.6 MB
Events in quadrant A3,332,774647,669
Events in quadrant B3,490,648664,172
Events in quadrant C3,450,043643,905
Events in quadrant D4,075,587623,821

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137900
B0143550
C0142990
D0164470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6094330.541516%
B6095731.197703%
C60951222.001641%
D6094811.329176%

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 7464 6095 0 0 0.00% 0.00%
B 7465 6096 11 11 0.15% 0.18%
C 7465 6096 3 3 0.04% 0.05%
D 7464 6095 44 44 0.59% 0.72%

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 8 205 47678 276.21 852 837 169.6
A 13 254 10592 57.52 852 837 169.6
A 3 137 7129 37.1 852 837 169.6
B 0 229 98016 614.99 852 834 158.0
B 3 64 49315 306.8 852 834 158.0
B 12 111 18573 112.26 852 834 158.0
C 14 238 137006 702.1 838 847 193.9
C 2 16 16000 78.14 838 847 193.9
C 0 239 15336 74.71 838 847 193.9
D 1 52 491175 2415.81 843 820 203.0
D 8 195 229816 1128.19 843 820 203.0
D 12 235 143178 701.35 843 820 203.0

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