ASTROSAT CZTI

Data Quality Report

Orbit 37250

Creation date: 2024-06-27T21:37:27.524449
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/AS1T04_087T01_9000005292_37250cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37250cztM0_level2_quad_clean.evt
Size (bytes)180,483,84021,913,920
Size172.1 MB 20.9 MB
Events in quadrant A1,755,939129,440
Events in quadrant B1,059,758135,815
Events in quadrant C1,478,810127,679
Events in quadrant D1,042,138133,392

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064742
B042911
C055371
D042491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187021811.657754%
B187070.374332%
C18701136.042781%
D1870281.497326%

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 3244 1871 174 174 5.36% 9.30%
B 3244 1871 2 2 0.06% 0.11%
C 3244 1871 99 99 3.05% 5.29%
D 3244 1871 18 18 0.55% 0.96%

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 15 237 741757 15758.07 225 220 47.1
A 10 83 119848 2542.16 225 220 47.1
A 13 248 14617 305.94 225 220 47.1
B 4 80 56120 1202.08 230 224 46.5
B 0 230 48288 1033.65 230 224 46.5
B 0 190 13857 293.19 230 224 46.5
C 1 23 338484 6313.57 219 220 53.6
C 14 254 119261 2221.86 219 220 53.6
C 0 10 81430 1515.75 219 220 53.6
D 2 250 31611 535.81 228 221 58.6
D 13 249 23280 393.6 228 221 58.6
D 2 153 19957 336.88 228 221 58.6

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