ASTROSAT CZTI

Data Quality Report

Orbit 07174

Creation date: 2024-06-27T15:16:31.394295
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/AS1G06_102T01_9000000978_07174cztM0_level2.evt modeM0/AS1G06_102T01_9000000978_07174cztM0_level2_quad_clean.evt
Size (bytes)2,768,875,200422,032,320
Size2.6 GB 402.5 MB
Events in quadrant A15,807,3842,668,215
Events in quadrant B16,895,0302,716,659
Events in quadrant C16,763,0442,668,606
Events in quadrant D32,101,8522,395,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0706536
B0731735
C0741415
D011824510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06900
B06900
C06900
D06900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A339317252.136689%
B339317212.124901%
C339319142.693702%
D33930508914.998526%

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 44021 33933 39 39 0.09% 0.11%
B 44021 33933 16 16 0.04% 0.05%
C 44021 33933 277 277 0.63% 0.82%
D 44021 33933 4263 4263 9.68% 12.56%

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 14 238 345397 428.9 3935 3852 796.3
A 14 111 160698 196.96 3935 3852 796.3
A 8 15 95276 114.81 3935 3852 796.3
B 0 214 415040 541.57 3986 3885 759.2
B 0 219 329868 429.39 3986 3885 759.2
B 15 204 238510 309.05 3986 3885 759.2
C 4 254 1266737 1431.64 3821 3823 882.1
C 8 208 422021 474.07 3821 3823 882.1
C 9 68 120685 132.47 3821 3823 882.1
D 12 221 12404338 14044.52 3628 3511 883.0
D 2 216 2863054 3238.57 3628 3511 883.0
D 8 195 1197206 1351.92 3628 3511 883.0

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