ASTROSAT CZTI

Data Quality Report

Orbit 28918

Creation date: 2024-06-27T19:58:12.608544
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_064T02_9000004146_28918cztM0_level2.evt modeM0/AS1A10_064T02_9000004146_28918cztM0_level2_quad_clean.evt
Size (bytes)186,024,96027,878,400
Size177.4 MB 26.6 MB
Events in quadrant A1,081,000174,572
Events in quadrant B1,112,261181,043
Events in quadrant C1,251,593172,725
Events in quadrant D2,045,399164,179

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045211
B046191
C051741
D075531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2081211.009130%
B2081311.489668%
C2081713.411821%
D20821356.484150%

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 3076 2082 0 0 0.00% 0.00%
B 3076 2082 0 0 0.00% 0.00%
C 3076 2082 0 0 0.00% 0.00%
D 3077 2083 115 115 3.74% 5.52%

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 13 254 4255 69.02 279 272 57.7
A 3 137 2748 42.9 279 272 57.7
A 13 6 2694 41.97 279 272 57.7
B 12 111 6592 113.89 282 275 55.5
B 11 111 5811 99.81 282 275 55.5
B 14 111 5162 88.11 282 275 55.5
C 3 233 123675 1861.83 275 276 66.3
C 14 238 45266 678.8 275 276 66.3
C 2 114 5066 72.27 275 276 66.3
D 8 195 777102 11694.36 271 263 66.4
D 1 52 195892 2944.96 271 263 66.4
D 12 233 15928 235.82 271 263 66.4

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