ASTROSAT CZTI

Data Quality Report

Orbit 19164

Creation date: 2024-06-27T17:59:41.413336
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/AS1A05_046T01_9000002838_19164cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19164cztM0_level2_quad_clean.evt
Size (bytes)463,210,560105,338,880
Size441.8 MB 100.5 MB
Events in quadrant A3,117,584692,517
Events in quadrant B3,618,702718,005
Events in quadrant C3,585,413691,096
Events in quadrant D3,293,809664,072

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130392
B0145892
C0144722
D0137602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6080310.509868%
B60801512.483553%
C60791041.710808%
D6079791.299556%

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 7445 6081 0 0 0.00% 0.00%
B 7445 6081 55 55 0.74% 0.90%
C 7444 6080 9 9 0.12% 0.15%
D 7444 6080 62 62 0.83% 1.02%

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 11 47 22151 132.49 801 786 161.3
A 13 254 7779 43.36 801 786 161.3
A 0 226 7164 39.55 801 786 161.3
B 3 112 362060 2400.04 807 789 150.5
B 7 220 56552 370.45 807 789 150.5
B 0 197 22789 146.15 807 789 150.5
C 3 233 391435 2138.17 783 792 182.7
C 14 238 123269 670.37 783 792 182.7
C 8 128 11483 58.52 783 792 182.7
D 11 176 339599 1808.85 779 758 187.3
D 2 234 28963 150.57 779 758 187.3
D 1 52 8632 42.03 779 758 187.3

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