ASTROSAT CZTI

Data Quality Report

Orbit 16064

Creation date: 2024-06-27T17:17:25.859001
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/AS1A04_230T01_9000002374_16064cztM0_level2.evt modeM0/AS1A04_230T01_9000002374_16064cztM0_level2_quad_clean.evt
Size (bytes)434,828,160101,934,720
Size414.7 MB 97.2 MB
Events in quadrant A3,122,160691,904
Events in quadrant B3,184,023689,520
Events in quadrant C2,884,133650,376
Events in quadrant D3,580,038645,515

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129242
B0130951
C0122711
D0144621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5870470.800681%
B5870711.209540%
C5870500.851789%
D58701081.839864%

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 7056 5871 3 3 0.04% 0.05%
B 7056 5871 28 28 0.40% 0.48%
C 7056 5871 3 3 0.04% 0.05%
D 7056 5871 82 82 1.16% 1.40%

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 3 80 184887 1221.84 750 735 150.7
A 9 143 38694 251.86 750 735 150.7
A 12 96 13044 81.67 750 735 150.7
B 7 220 155127 1113.97 738 720 138.6
B 0 189 39459 279.48 738 720 138.6
B 0 197 20419 142.12 738 720 138.6
C 14 238 108366 659.58 702 706 163.2
C 3 233 17152 100.76 702 706 163.2
C 0 207 16973 99.66 702 706 163.2
D 12 218 412580 2354.17 720 701 175.0
D 1 52 263221 1500.48 720 701 175.0
D 13 232 56309 317.84 720 701 175.0

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