ASTROSAT CZTI

Data Quality Report

Orbit 40947

Creation date: 2024-06-27T22:22:33.982329
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_052T04_9000005582_40947cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40947cztM0_level2_quad_clean.evt
Size (bytes)671,705,280187,260,480
Size640.6 MB 178.6 MB
Events in quadrant A5,953,5651,249,610
Events in quadrant B5,221,3901,275,915
Events in quadrant C5,729,6521,210,060
Events in quadrant D7,047,7201,121,538

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247334
B0241643
C0242923
D0292683

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11754150.127616%
B11754570.484941%
C11754730.621065%
D117542912.475753%

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 14470 11756 7 7 0.05% 0.06%
B 14470 11756 26 26 0.18% 0.22%
C 14470 11756 63 63 0.44% 0.54%
D 14470 11756 238 238 1.64% 2.02%

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 961081 3716.57 1270 1242 258.3
A 12 189 36868 137.94 1270 1242 258.3
A 10 255 22740 83.24 1270 1242 258.3
B 5 255 203945 833.77 1252 1212 243.2
B 0 190 48230 193.37 1252 1212 243.2
B 12 111 30957 122.33 1252 1212 243.2
C 15 214 541883 1887.25 1238 1243 286.5
C 0 10 220595 765.71 1238 1243 286.5
C 14 83 97420 335.73 1238 1243 286.5
D 13 249 1456470 4842.99 1237 1201 300.5
D 2 249 294642 976.54 1237 1201 300.5
D 1 52 119571 393.92 1237 1201 300.5

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