ASTROSAT CZTI

Data Quality Report

Orbit 35320

Creation date: 2022-04-10T15:29:32.407486
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/AS1T05_023T01_9000005058_35320cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35320cztM0_level2_quad_clean.evt
Size (bytes)1,207,791,360140,532,480
Size1.1 GB 134.0 MB
Events in quadrant A6,209,353910,689
Events in quadrant B12,348,795819,521
Events in quadrant C6,741,298876,991
Events in quadrant D10,472,133819,518

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254532
B0447532
C0268612
D0397002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11977380.317275%
B11977214017.867580%
C119771751.461134%
D119775364.475244%

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 15923 11979 19 19 0.12% 0.16%
B 15923 11979 1541 1541 9.68% 12.86%
C 15923 11979 137 137 0.86% 1.14%
D 15923 11979 514 514 3.23% 4.29%

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 15 169 206455 701.88 1474 1449 292.1
A 10 83 143161 485.18 1474 1449 292.1
A 9 143 62049 207.48 1474 1449 292.1
B 5 236 5083007 19850.19 1364 1330 256.0
B 5 172 1871730 7306.21 1364 1330 256.0
B 12 111 31154 116.5 1364 1330 256.0
C 0 10 557536 1746.2 1401 1413 318.5
C 15 214 483622 1514.11 1401 1413 318.5
C 3 233 76408 235.48 1401 1413 318.5
D 8 195 1453798 4324.85 1395 1359 335.8
D 12 235 1389807 4134.3 1395 1359 335.8
D 7 80 828346 2462.47 1395 1359 335.8

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