ASTROSAT CZTI

Data Quality Report

Orbit 20811

Creation date: 2024-06-27T18:17:48.154854
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/AS1A05_007T06_9000003050_20811cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20811cztM0_level2_quad_clean.evt
Size (bytes)319,475,52051,281,280
Size304.7 MB 48.9 MB
Events in quadrant A1,961,227324,328
Events in quadrant B2,238,562331,373
Events in quadrant C1,961,384311,346
Events in quadrant D3,235,672297,910

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010216
B010323
C010523
D010422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124
B0135
C0125
D0124

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105992258
B0114672349
C0107512409
D0151462833

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4092170.415445%
B4095521.269841%
C4067421.032702%
D40702065.061425%

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 6274 4227 0 0 0.00% 0.00%
B 6274 4225 20 20 0.32% 0.47%
C 6274 4202 0 0 0.00% 0.00%
D 6274 4198 136 136 2.17% 3.24%

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 13 252 6517 58.68 508 497 102.6
A 0 226 4410 38.14 508 497 102.6
A 3 137 3992 34.07 508 497 102.6
B 7 220 164600 1742.26 499 487 94.2
B 4 171 33479 350.25 499 487 94.2
B 0 189 23544 244.78 499 487 94.2
C 14 238 77055 690.93 480 484 110.8
C 9 54 7708 65.19 480 484 110.8
C 3 233 3649 28.56 480 484 110.8
D 1 52 730956 6354.33 478 464 115.0
D 1 20 587179 5103.66 478 464 115.0
D 9 1 63128 545.1 478 464 115.0

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