ASTROSAT CZTI

Data Quality Report

Orbit 23245

Creation date: 2024-06-27T18:51:45.388212
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/AS1A08_004T02_9000003436_23245cztM0_level2.evt modeM0/AS1A08_004T02_9000003436_23245cztM0_level2_quad_clean.evt
Size (bytes)149,814,72042,647,040
Size142.9 MB 40.7 MB
Events in quadrant A1,003,756300,255
Events in quadrant B1,021,306303,948
Events in quadrant C1,240,473274,885
Events in quadrant D1,142,726276,225

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041680
B042020
C049290
D045500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186520.107239%
B186570.375335%
C18651085.790885%
D1866382.036442%

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 1865 1865 0 0 0.00% 0.00%
B 1865 1865 2 2 0.11% 0.11%
C 1865 1865 85 85 4.56% 4.56%
D 1866 1866 29 29 1.55% 1.55%

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 6 16 3734 66.16 259 256 52.6
A 13 254 2942 51.09 259 256 52.6
A 0 226 2337 39.59 259 256 52.6
B 15 32 23282 468.03 253 248 49.2
B 12 111 4835 93.2 253 248 49.2
B 11 111 4466 85.71 253 248 49.2
C 3 233 286902 5256.56 232 234 54.5
C 14 238 38366 699.22 232 234 54.5
C 0 10 5249 91.96 232 234 54.5
D 1 52 81761 1365.75 244 237 59.7
D 7 238 39581 659.12 244 237 59.7
D 2 152 23880 396.08 244 237 59.7

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