ASTROSAT CZTI

Data Quality Report

Orbit 34582

Creation date: 2022-02-19T17:49:31.106471
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_176T03_9000004942_34582cztM0_level2.evt modeM0/AS1A05_176T03_9000004942_34582cztM0_level2_quad_clean.evt
Size (bytes)568,321,92048,332,160
Size542.0 MB 46.1 MB
Events in quadrant A2,711,408286,968
Events in quadrant B3,759,416276,554
Events in quadrant C2,957,783282,829
Events in quadrant D7,430,053250,705

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110693
B0146402
C0116002
D0257772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521860.114987%
B52182003.832886%
C5218420.804906%
D521899519.068609%

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 7341 5219 0 0 0.00% 0.00%
B 7341 5219 154 154 2.10% 2.95%
C 7341 5219 29 29 0.40% 0.56%
D 7341 5219 913 913 12.44% 17.49%

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 10 83 42814 309.33 684 674 136.2
A 13 6 11872 82.2 684 674 136.2
A 9 143 11258 77.69 684 674 136.2
B 5 172 713593 5728.54 661 647 124.5
B 0 189 198645 1590.92 661 647 124.5
B 0 190 141745 1133.73 661 647 124.5
C 15 214 222433 1477.52 656 662 150.1
C 0 10 129621 859.17 656 662 150.1
C 14 67 30357 197.84 656 662 150.1
D 8 195 2194317 14540.51 620 604 150.9
D 1 47 1226702 8126.9 620 604 150.9
D 1 52 765830 5072.12 620 604 150.9

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