ASTROSAT CZTI

Data Quality Report

Orbit 30902

Creation date: 2024-06-27T20:20:58.186254
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/AS1C06_004T01_9000004466_30902cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30902cztM0_level2_quad_clean.evt
Size (bytes)571,345,920103,872,960
Size544.9 MB 99.1 MB
Events in quadrant A3,079,241701,600
Events in quadrant B5,972,458688,367
Events in quadrant C3,594,656665,137
Events in quadrant D4,248,175668,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131961
B0220371
C0147861
D0168101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6045420.694789%
B60451702.812242%
C60455198.585608%
D60451131.869313%

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 7300 6045 0 0 0.00% 0.00%
B 7300 6045 38 38 0.52% 0.63%
C 7300 6045 3 3 0.04% 0.05%
D 7300 6045 56 56 0.77% 0.93%

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 0 13 11596 68.95 793 779 156.9
A 13 254 11403 67.72 793 779 156.9
A 0 191 7592 43.43 793 779 156.9
B 6 159 1874584 12848.12 785 767 145.8
B 6 36 728029 4986.59 785 767 145.8
B 0 190 209884 1433.84 785 767 145.8
C 14 238 238223 1388.47 740 746 171.0
C 3 233 184034 1071.64 740 746 171.0
C 14 254 167386 974.31 740 746 171.0
D 8 195 729035 4027.22 771 756 180.8
D 12 218 114747 630.34 771 756 180.8
D 10 1 111944 614.84 771 756 180.8

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