ASTROSAT CZTI

Data Quality Report

Orbit 39963

Creation date: 2024-06-27T22:10:39.708788
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_054T03_9000005516_39963cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39963cztM0_level2_quad_clean.evt
Size (bytes)137,810,88041,359,680
Size131.4 MB 39.4 MB
Events in quadrant A1,298,348274,584
Events in quadrant B1,201,954282,965
Events in quadrant C1,189,651272,193
Events in quadrant D1,221,898249,934

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052482
B050861
C049181
D052251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A240180.333195%
B240190.374844%
C240140.166597%
D2401150.624740%

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 4044 2402 2 2 0.05% 0.08%
B 4044 2402 5 5 0.12% 0.21%
C 4044 2402 5 5 0.12% 0.21%
D 4044 2402 11 11 0.27% 0.46%

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 206099 3475.77 280 275 59.2
A 13 252 4900 78.1 280 275 59.2
A 3 137 3095 47.62 280 275 59.2
B 4 171 61330 1084.65 277 269 56.3
B 5 255 38522 679.5 277 269 56.3
B 4 170 7718 132.32 277 269 56.3
C 15 214 101567 1557.18 273 274 65.0
C 0 10 11666 175.13 273 274 65.0
C 9 187 6812 100.51 273 274 65.0
D 2 250 66522 980.61 273 266 67.6
D 12 227 34884 512.36 273 266 67.6
D 2 249 20473 299.07 273 266 67.6

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