ASTROSAT CZTI

Data Quality Report

Orbit 07485

Creation date: 2024-06-27T15:20:20.211147
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/AS1A02_165T03_9000001032_07485cztM0_level2.evt modeM0/AS1A02_165T03_9000001032_07485cztM0_level2_quad_clean.evt
Size (bytes)201,916,80032,333,760
Size192.6 MB 30.8 MB
Events in quadrant A1,334,671197,994
Events in quadrant B1,406,851202,797
Events in quadrant C1,322,780199,591
Events in quadrant D1,863,814183,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056572
B058921
C056721
D074191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2719200.735565%
B2719501.838911%
C2719260.956234%
D27191605.884516%

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 3709 2720 0 0 0.00% 0.00%
B 3709 2720 2 2 0.05% 0.07%
C 3709 2720 1 1 0.03% 0.04%
D 3709 2720 110 110 2.97% 4.04%

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 15 239 11519 155.63 343 334 71.9
A 0 226 3185 39.67 343 334 71.9
A 12 194 3097 38.44 343 334 71.9
B 0 214 54022 786.75 345 337 68.2
B 12 111 6746 93.92 345 337 68.2
B 4 173 5986 82.79 345 337 68.2
C 1 16 11570 140.75 335 335 79.8
C 10 22 2909 32.25 335 335 79.8
C 13 61 2517 27.34 335 335 79.8
D 2 152 286804 3507.51 329 317 81.7
D 12 233 180544 2206.55 329 317 81.7
D 1 52 70496 859.21 329 317 81.7

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