ASTROSAT CZTI

Data Quality Report

Orbit 33090

Creation date: 2024-06-27T20:45:07.299324
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/AS1A11_030T01_9000004760_33090cztM0_level2.evt modeM0/AS1A11_030T01_9000004760_33090cztM0_level2_quad_clean.evt
Size (bytes)806,811,84085,988,160
Size769.4 MB 82.0 MB
Events in quadrant A2,663,229669,386
Events in quadrant B2,895,091678,487
Events in quadrant C5,514,847588,043
Events in quadrant D13,017,403308,861

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109073
B0117762
C0197812
D0422032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5093130.255252%
B5093500.981740%
C509392918.240723%
D5093494197.015511%

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 9188 5095 5 5 0.05% 0.10%
B 9188 5095 26 26 0.28% 0.51%
C 9188 5095 746 746 8.12% 14.64%
D 9188 5094 4862 4862 52.92% 95.45%

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 43460 320.22 675 664 133.6
A 13 6 9399 65.36 675 664 133.6
A 13 254 9348 64.98 675 664 133.6
B 5 200 113115 896.21 673 659 125.5
B 5 172 77165 609.71 673 659 125.5
B 0 189 24394 189.16 673 659 125.5
C 1 23 2111299 15592.08 590 599 135.4
C 8 111 637032 4701.43 590 599 135.4
C 7 221 257838 1900.27 590 599 135.4
D 7 223 9640463 98423.15 370 363 97.9
D 8 195 1006517 10272.6 370 363 97.9
D 12 218 618361 6309.61 370 363 97.9

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