ASTROSAT CZTI

Data Quality Report

Orbit 41106

Creation date: 2024-06-27T22:24:32.548750
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_044T19_9000005600_41106cztM0_level2.fits modeM0/AS1A12_044T19_9000005600_41106cztM0_level2_quad_clean.evt
Size (bytes)746,893,440167,918,400
Size712.3 MB 160.1 MB
Events in quadrant A5,817,5041,162,294
Events in quadrant B6,628,2511,155,667
Events in quadrant C5,451,1721,110,266
Events in quadrant D8,921,620915,894

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235794
B0269453
C0227383
D0341293

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10692360.336700%
B106924304.021698%
C10692800.748223%
D10692146213.673775%

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 14811 10695 19 19 0.13% 0.18%
B 14811 10695 288 288 1.94% 2.69%
C 14811 10695 57 57 0.38% 0.53%
D 14811 10695 1125 1125 7.60% 10.52%

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 935932 3778.83 1204 1181 247.4
A 2 79 127268 509.72 1204 1181 247.4
A 12 189 39775 156.02 1204 1181 247.4
B 0 245 1490663 6457.0 1179 1145 230.7
B 0 186 289661 1250.71 1179 1145 230.7
B 0 190 172269 741.82 1179 1145 230.7
C 15 214 456355 1671.26 1161 1165 272.4
C 14 254 373138 1365.72 1161 1165 272.4
C 0 10 71623 258.69 1161 1165 272.4
D 2 249 2961228 10882.37 1103 1073 272.0
D 13 249 1560628 5733.37 1103 1073 272.0
D 5 32 57160 206.19 1103 1073 272.0

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