ASTROSAT CZTI

Data Quality Report

Orbit 24615

Creation date: 2024-06-27T19:07:56.406625
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/AS1T03_189T01_9000003614_24615cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24615cztM0_level2_quad_clean.evt
Size (bytes)909,918,720159,206,400
Size867.8 MB 151.8 MB
Events in quadrant A5,817,7821,007,331
Events in quadrant B6,597,8711,012,667
Events in quadrant C7,173,653969,937
Events in quadrant D7,115,496961,259

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254982
B0276332
C0291692
D0294702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12586840.667408%
B125872542.017955%
C125872922.319854%
D12586810.643572%

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 13851 12588 0 0 0.00% 0.00%
B 13852 12589 93 93 0.67% 0.74%
C 13852 12589 93 93 0.67% 0.74%
D 13851 12588 19 19 0.14% 0.15%

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 13 254 19551 59.51 1505 1472 303.8
A 3 137 14262 42.1 1505 1472 303.8
A 6 16 13823 40.66 1505 1472 303.8
B 3 64 704018 2445.18 1490 1447 287.3
B 7 202 36973 123.64 1490 1447 287.3
B 12 111 36175 120.87 1490 1447 287.3
C 7 247 1087151 3231.5 1439 1448 336.0
C 14 238 229944 680.1 1439 1448 336.0
C 9 54 217186 642.12 1439 1448 336.0
D 8 195 1253294 3553.68 1459 1415 352.3
D 7 238 209095 589.54 1459 1415 352.3
D 1 52 76299 212.57 1459 1415 352.3

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