ASTROSAT CZTI

Data Quality Report

Orbit 29892

Creation date: 2024-06-27T20:08:49.193812
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/AS1A10_102T12_9000004284_29892cztM0_level2.evt modeM0/AS1A10_102T12_9000004284_29892cztM0_level2_quad_clean.evt
Size (bytes)592,652,16096,001,920
Size565.2 MB 91.6 MB
Events in quadrant A3,535,329626,678
Events in quadrant B5,346,106630,830
Events in quadrant C4,460,141612,511
Events in quadrant D4,181,131597,573

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145212
B0196392
C0178142
D0167952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63001131.793651%
B63012063.269322%
C63012433.856531%
D63011592.523409%

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 7595 6302 4 4 0.05% 0.06%
B 7596 6303 13 13 0.17% 0.21%
C 7596 6303 3 3 0.04% 0.05%
D 7596 6303 53 53 0.70% 0.84%

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 8 192 26045 140.37 905 890 179.2
A 1 113 18627 98.98 905 890 179.2
A 13 254 10868 55.68 905 890 179.2
B 6 159 1746814 10391.7 895 874 168.0
B 0 229 83708 493.02 895 874 168.0
B 12 111 20151 114.74 895 874 168.0
C 3 233 690704 3406.7 879 887 202.5
C 10 22 186340 915.87 879 887 202.5
C 14 238 145846 715.89 879 887 202.5
D 8 195 339871 1636.22 887 867 207.2
D 7 80 235812 1133.97 887 867 207.2
D 1 52 72667 346.55 887 867 207.2

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