ASTROSAT CZTI

Data Quality Report

Orbit 12836

Creation date: 2024-06-27T16:32:56.352890
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/AS1G08_071T01_9000001888_12836cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12836cztM0_level2_quad_clean.evt
Size (bytes)491,613,12082,048,320
Size468.8 MB 78.2 MB
Events in quadrant A3,242,934521,362
Events in quadrant B4,565,629507,335
Events in quadrant C3,037,120514,568
Events in quadrant D3,606,935493,132

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135683
B0174602
C0131112
D0148822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6415340.530008%
B64154336.749805%
C6415240.374123%
D6415951.480904%

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 7631 6417 0 0 0.00% 0.00%
B 7631 6417 288 288 3.77% 4.49%
C 7631 6417 0 0 0.00% 0.00%
D 7631 6417 54 54 0.71% 0.84%

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 12 189 65238 392.05 818 801 164.4
A 15 222 34102 202.61 818 801 164.4
A 0 226 7404 40.17 818 801 164.4
B 4 206 891892 5931.44 796 779 150.2
B 4 239 220326 1461.35 796 779 150.2
B 0 85 126899 839.48 796 779 150.2
C 13 61 5711 27.58 777 781 178.8
C 3 248 3278 13.97 777 781 178.8
C 3 233 2137 7.59 777 781 178.8
D 4 95 234537 1271.46 779 758 183.9
D 8 195 146625 793.33 779 758 183.9
D 2 136 126756 685.27 779 758 183.9

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