ASTROSAT CZTI

Data Quality Report

Orbit 12970

Creation date: 2024-06-27T16:34:35.563089
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_112T01_9000001908_12970cztM0_level2.evt modeM0/AS1A04_112T01_9000001908_12970cztM0_level2_quad_clean.evt
Size (bytes)542,410,560114,626,880
Size517.3 MB 109.3 MB
Events in quadrant A3,892,580761,186
Events in quadrant B4,367,144719,831
Events in quadrant C3,433,200773,176
Events in quadrant D4,262,565733,269

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158013
B0172712
C0146522
D0170492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69532233.207249%
B69536879.880627%
C69531902.732633%
D69533414.904358%

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 9469 6956 12 12 0.13% 0.17%
B 9469 6956 228 228 2.41% 3.28%
C 9469 6956 0 0 0.00% 0.00%
D 9469 6956 138 138 1.46% 1.98%

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 12 189 108992 605.73 901 881 178.5
A 1 162 99659 553.43 901 881 178.5
A 1 178 43594 239.31 901 881 178.5
B 4 239 856768 5382.24 851 829 159.0
B 3 64 78689 489.59 851 829 159.0
B 0 219 54183 335.5 851 829 159.0
C 13 61 6283 27.22 879 879 198.5
C 0 207 2997 10.67 879 879 198.5
C 8 222 2602 8.68 879 879 198.5
D 1 52 380914 1857.66 870 847 204.6
D 2 14 298753 1456.08 870 847 204.6
D 8 195 209248 1018.6 870 847 204.6

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