ASTROSAT CZTI

Data Quality Report

Orbit 20641

Creation date: 2024-06-27T18:17:47.290181
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_007T06_9000003050_20641cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20641cztM0_level2_quad_clean.evt
Size (bytes)135,838,08036,956,160
Size129.5 MB 35.2 MB
Events in quadrant A904,234258,712
Events in quadrant B990,837253,325
Events in quadrant C977,787246,277
Events in quadrant D1,130,842243,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036940
B039630
C039000
D044650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158460.378788%
B1584261.641414%
C1584181.136364%
D1584281.767677%

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 1584 1584 0 0 0.00% 0.00%
B 1584 1584 13 13 0.82% 0.82%
C 1584 1584 4 4 0.25% 0.25%
D 1584 1584 17 17 1.07% 1.07%

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 12 16 45240 1007.38 219 214 44.7
A 12 194 10144 222.17 219 214 44.7
A 5 16 5330 114.46 219 214 44.7
B 7 220 88857 2163.62 212 207 41.0
B 0 190 18637 449.81 212 207 41.0
B 15 36 9515 227.17 212 207 41.0
C 8 208 122687 2496.87 210 211 49.1
C 14 238 32939 667.21 210 211 49.1
C 3 233 2276 42.1 210 211 49.1
D 1 52 111165 2072.73 216 210 53.5
D 12 227 75961 1415.09 216 210 53.5
D 7 238 36655 680.82 216 210 53.5

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