ASTROSAT CZTI

Data Quality Report

Orbit 19415

Creation date: 2024-06-27T18:02:34.609080
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_226T09_9000002884_19415cztM0_level2.evt modeM0/AS1A05_226T09_9000002884_19415cztM0_level2_quad_clean.evt
Size (bytes)391,484,16063,489,600
Size373.3 MB 60.5 MB
Events in quadrant A2,549,612403,160
Events in quadrant B2,712,942404,268
Events in quadrant C2,666,983380,084
Events in quadrant D3,567,635365,070

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110181
B0112992
C0112621
D0141471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5283350.662502%
B5282490.927679%
C5282651.230594%
D52821803.407800%

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 5573 5284 3 3 0.05% 0.06%
B 5572 5283 3 3 0.05% 0.06%
C 5572 5283 1 1 0.02% 0.02%
D 5571 5282 162 162 2.91% 3.07%

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 96 17226 123.94 655 641 133.8
A 13 254 8488 58.64 655 641 133.8
A 0 226 5798 38.54 655 641 133.8
B 0 198 82401 646.21 652 633 126.5
B 4 174 36844 286.18 652 633 126.5
B 12 111 15090 114.25 652 633 126.5
C 3 233 111034 756.96 620 623 145.9
C 14 238 94841 645.94 620 623 145.9
C 9 221 23848 159.23 620 623 145.9
D 7 238 857234 5631.36 623 604 152.1
D 1 52 284163 1864.07 623 604 152.1
D 2 234 21711 138.75 623 604 152.1

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