ASTROSAT CZTI

Data Quality Report

Orbit 34278

Creation date: 2022-01-30T04:49:36.856466
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/AS1T04_086T01_9000004890_34278cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34278cztM0_level2_quad_clean.evt
Size (bytes)482,823,36053,637,120
Size460.5 MB 51.2 MB
Events in quadrant A2,589,957321,253
Events in quadrant B4,136,205301,343
Events in quadrant C3,187,938330,847
Events in quadrant D4,357,893308,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108843
B0155312
C0125192
D0166402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517260.116009%
B517257311.078886%
C5172761.469451%
D51721663.209590%

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 7295 5173 0 0 0.00% 0.00%
B 7295 5173 379 379 5.20% 7.33%
C 7295 5173 54 54 0.74% 1.04%
D 7295 5173 140 140 1.92% 2.71%

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 47 101086 798.99 632 621 125.7
A 10 83 25737 199.74 632 621 125.7
A 9 143 11346 85.29 632 621 125.7
B 5 172 1556656 13397.76 612 597 116.1
B 0 229 102249 875.23 612 597 116.1
B 0 182 25488 214.31 612 597 116.1
C 15 214 226332 1553.08 632 639 145.3
C 14 254 186682 1280.24 632 639 145.3
C 0 10 162806 1115.94 632 639 145.3
D 8 195 768244 4687.37 615 602 163.8
D 12 235 527263 3215.9 615 602 163.8
D 7 80 190980 1162.49 615 602 163.8

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