ASTROSAT CZTI

Data Quality Report

Orbit 04985

Creation date: 2024-06-27T14:49:45.169701
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/AS1G05_115T01_9000000634_04985cztM0_level2.evt modeM0/AS1G05_115T01_9000000634_04985cztM0_level2_quad_clean.evt
Size (bytes)29,162,8805,788,800
Size27.8 MB 5.5 MB
Events in quadrant A203,36534,478
Events in quadrant B217,27435,955
Events in quadrant C220,05335,253
Events in quadrant D206,11227,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021
B020
C021
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064445482
B067595749
C063515297
D083537438

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06456
B06446
C06456
D06458

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A469102.132196%
B481122.494802%
C51561.165049%
D42992.097902%

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 3247 583 0 0 0.00% 0.00%
B 3263 566 0 0 0.00% 0.00%
C 3273 621 0 0 0.00% 0.00%
D 3279 528 0 0 0.00% 0.00%

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 8 15 2833 214.39 51 50 13.0
A 0 50 1453 108.08 51 50 13.0
A 4 2 912 66.4 51 50 13.0
B 0 219 5909 457.34 54 52 12.8
B 12 111 940 69.34 54 52 12.8
B 0 183 811 59.27 54 52 12.8
C 7 159 527 31.38 55 55 15.0
C 13 61 430 24.93 55 55 15.0
C 12 4 397 22.74 55 55 15.0
D 13 235 17845 1342.64 46 44 13.3
D 2 33 4948 369.88 46 44 13.3
D 1 7 2454 181.77 46 44 13.3

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