ASTROSAT CZTI

Data Quality Report

Orbit 41165

Creation date: 2024-06-27T22:25:25.124521
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_101T04_9000005610_41165cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41165cztM0_level2_quad_clean.evt
Size (bytes)279,866,88052,957,440
Size266.9 MB 50.5 MB
Events in quadrant A1,815,832382,727
Events in quadrant B1,903,073380,637
Events in quadrant C4,320,771255,872
Events in quadrant D2,051,042340,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074922
B080651
C0150371
D084181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A343870.203607%
B34381253.635835%
C3438110532.140780%
D3438371.076207%

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 5021 3439 1 1 0.02% 0.03%
B 5021 3439 77 77 1.53% 2.24%
C 5021 3439 977 977 19.46% 28.41%
D 5021 3439 26 26 0.52% 0.76%

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 300622 3711.35 386 376 80.9
A 7 3 10979 131.06 386 376 80.9
A 12 189 10043 119.49 386 376 80.9
B 0 245 333015 4446.87 375 365 74.8
B 5 255 54766 727.23 375 365 74.8
B 7 202 38603 511.17 375 365 74.8
C 9 54 2772894 38002.16 307 309 73.0
C 0 10 226324 3097.85 307 309 73.0
C 15 214 123323 1686.08 307 309 73.0
D 2 16 390079 4261.69 372 361 91.4
D 13 249 121111 1320.44 372 361 91.4
D 12 217 63447 689.87 372 361 91.4

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