ASTROSAT CZTI

Data Quality Report

Orbit 34680

Creation date: 2022-07-18T17:27:34.470719
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/AS1T04_078T01_9000004962_34680cztM0_level2.evt modeM0/AS1T04_078T01_9000004962_34680cztM0_level2_quad_clean.evt
Size (bytes)421,027,20064,203,840
Size401.5 MB 61.2 MB
Events in quadrant A2,554,469417,971
Events in quadrant B4,061,450390,474
Events in quadrant C2,393,740420,446
Events in quadrant D3,429,654392,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124171736
B0173312384
C0111591368
D0160202861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225
B0224
C0213
D0245

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010711
B010415
C010510
D010511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4612541.170859%
B453867614.896430%
C4639160.344902%
D4511631.396586%

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 7365 4832 38 38 0.52% 0.79%
B 7365 4766 486 486 6.60% 10.20%
C 7365 4867 10 10 0.14% 0.21%
D 7365 4751 53 53 0.72% 1.12%

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 15 169 266863 2464.03 539 529 108.1
A 15 174 82228 755.85 539 529 108.1
A 10 83 43362 396.28 539 529 108.1
B 5 172 1532408 16092.34 497 484 95.2
B 5 255 441604 4633.82 497 484 95.2
B 0 190 88171 921.12 497 484 95.2
C 15 214 199687 1644.0 525 529 121.1
C 0 10 64856 531.0 525 529 121.1
C 14 67 43518 354.86 525 529 121.1
D 8 195 1091205 8803.82 506 492 123.9
D 2 249 134403 1080.88 506 492 123.9
D 7 223 55443 443.54 506 492 123.9

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