ASTROSAT CZTI

Data Quality Report

Orbit 41690

Creation date: 2024-06-27T22:31:32.954514
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_044T21_9000005688_41690cztM0_level2.fits modeM0/AS1A12_044T21_9000005688_41690cztM0_level2_quad_clean.evt
Size (bytes)215,087,04056,885,760
Size205.1 MB 54.3 MB
Events in quadrant A1,796,478396,111
Events in quadrant B1,574,486399,290
Events in quadrant C1,659,318374,133
Events in quadrant D2,673,593319,483

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072621
B068761
C069411
D0101501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A329250.151883%
B3292200.607533%
C3292300.911300%
D329237611.421628%

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 3292 3292 1 1 0.03% 0.03%
B 3292 3292 15 15 0.46% 0.46%
C 3292 3292 26 26 0.79% 0.79%
D 3291 3291 345 345 10.48% 10.48%

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 303676 3781.94 382 373 80.2
A 13 248 7857 93.32 382 373 80.2
A 15 223 4117 46.68 382 373 80.2
B 5 255 57401 777.7 373 362 73.3
B 0 186 33941 457.83 373 362 73.3
B 0 245 11567 152.77 373 362 73.3
C 15 214 135454 1571.07 366 368 86.0
C 0 10 94903 1099.46 366 368 86.0
C 13 61 2383 23.43 366 368 86.0
D 2 249 578873 6518.38 354 343 88.8
D 13 249 348728 3925.31 354 343 88.8
D 2 120 305156 3434.37 354 343 88.8

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