ASTROSAT CZTI

Data Quality Report

Orbit 41156

Creation date: 2024-06-27T22:25:10.679399
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/AS1A12_025T14_9000005606_41156cztM0_level2.fits modeM0/AS1A12_025T14_9000005606_41156cztM0_level2_quad_clean.evt
Size (bytes)107,565,12032,083,200
Size102.6 MB 30.6 MB
Events in quadrant A1,015,510220,373
Events in quadrant B850,883226,771
Events in quadrant C1,046,000205,459
Events in quadrant D934,149194,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041012
B034801
C041151
D037771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170160.352734%
B170110.058789%
C1701382.233980%
D1701170.999412%

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 3824 1702 1 1 0.03% 0.06%
B 3824 1702 0 0 0.00% 0.00%
C 3824 1702 35 35 0.92% 2.06%
D 3824 1702 10 10 0.26% 0.59%

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 10 83 192188 4276.18 211 207 44.9
A 13 254 3042 63.15 211 207 44.9
A 15 254 2352 47.78 211 207 44.9
B 0 190 14709 340.38 209 204 42.6
B 0 245 10359 238.3 209 204 42.6
B 12 111 4987 112.24 209 204 42.6
C 0 10 93755 1952.64 201 202 47.9
C 9 54 87916 1830.77 201 202 47.9
C 15 214 76718 1597.04 201 202 47.9
D 2 16 65441 1277.65 202 196 51.1
D 2 153 28283 550.01 202 196 51.1
D 2 249 20846 404.37 202 196 51.1

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