ASTROSAT CZTI

Data Quality Report

Orbit 16574

Creation date: 2024-06-27T17:24:35.004869
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/AS1T03_020T01_9000002444_16574cztM0_level2.evt modeM0/AS1T03_020T01_9000002444_16574cztM0_level2_quad_clean.evt
Size (bytes)623,041,920107,516,160
Size594.2 MB 102.5 MB
Events in quadrant A3,707,269746,350
Events in quadrant B3,882,200774,660
Events in quadrant C4,647,713726,591
Events in quadrant D6,146,451510,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157363
B0161732
C0186162
D0233632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71301111.556802%
B71301432.005610%
C71302303.225806%
D7130289640.617111%

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 9766 7133 42 42 0.43% 0.59%
B 9766 7133 8 8 0.08% 0.11%
C 9766 7133 1 1 0.01% 0.01%
D 9766 7130 695 695 7.12% 9.75%

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 9 143 265914 1508.14 869 848 175.8
A 2 79 61465 344.89 869 848 175.8
A 15 174 35367 196.4 869 848 175.8
B 15 35 163502 1001.12 885 863 162.5
B 0 85 64862 393.95 885 863 162.5
B 0 229 45645 275.66 885 863 162.5
C 3 233 1226064 6305.59 840 845 194.3
C 14 238 133292 681.64 840 845 194.3
C 7 247 9278 43.4 840 845 194.3
D 1 52 2822818 20051.72 581 563 140.7
D 2 33 895315 6357.09 581 563 140.7
D 10 70 88742 626.5 581 563 140.7

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