ASTROSAT CZTI

Data Quality Report

Orbit 10843

Creation date: 2024-06-27T16:04:26.321058
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/AS1A03_086T01_9000001568_10843cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10843cztM0_level2_quad_clean.evt
Size (bytes)484,050,24068,374,080
Size461.6 MB 65.2 MB
Events in quadrant A3,622,163412,008
Events in quadrant B3,783,821420,795
Events in quadrant C2,864,695435,194
Events in quadrant D3,995,559397,785

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201
B0201
C0202
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013214
B01328
C013216
D013212

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168012250
B0173692478
C0136631523
D0182182491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57171642.868637%
B57842534.374136%
C5842520.890106%
D57442905.048747%

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 7595 6242 50 50 0.66% 0.80%
B 7596 6269 100 100 1.32% 1.60%
C 7596 6337 2 2 0.03% 0.03%
D 7596 6241 192 192 2.53% 3.08%

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 5 670839 4531.71 725 713 147.9
A 13 251 83461 559.58 725 713 147.9
A 15 174 35765 237.04 725 713 147.9
B 4 239 873047 6230.85 728 713 140.0
B 4 173 17534 120.15 728 713 140.0
B 12 111 14361 97.48 728 713 140.0
C 14 234 15916 89.99 728 736 168.7
C 3 254 6159 32.15 728 736 168.7
C 13 61 5478 28.11 728 736 168.7
D 14 34 768365 4480.47 706 689 171.3
D 13 105 191761 1115.18 706 689 171.3
D 12 227 84123 486.96 706 689 171.3

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