ASTROSAT CZTI

Data Quality Report

Orbit 18496

Creation date: 2024-06-27T17:50:46.929130
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/AS1T03_083T01_9000002742_18496cztM0_level2.evt modeM0/AS1T03_083T01_9000002742_18496cztM0_level2_quad_clean.evt
Size (bytes)509,201,280131,319,360
Size485.6 MB 125.2 MB
Events in quadrant A3,730,651909,415
Events in quadrant B4,685,915899,597
Events in quadrant C3,130,236879,510
Events in quadrant D3,450,205852,507

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152021
B0180381
C0133391
D0144731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62541822.910138%
B62555528.824940%
C6255701.119105%
D6255791.262990%

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 7479 6254 106 106 1.42% 1.69%
B 7479 6254 389 389 5.20% 6.22%
C 7480 6255 0 0 0.00% 0.00%
D 7480 6255 62 62 0.83% 0.99%

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 0 13 587326 3666.86 803 788 160.0
A 15 192 52228 321.59 803 788 160.0
A 13 254 9194 52.55 803 788 160.0
B 10 245 1486347 10066.18 786 771 147.6
B 7 220 40195 267.13 786 771 147.6
B 4 216 27762 182.89 786 771 147.6
C 14 238 120831 680.46 765 772 176.4
C 3 233 19263 104.8 765 772 176.4
C 7 247 8921 46.19 765 772 176.4
D 12 110 314751 1688.62 768 745 186.0
D 7 238 97449 520.04 768 745 186.0
D 1 52 84600 450.94 768 745 186.0

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