ASTROSAT CZTI

Data Quality Report

Orbit 00216

Creation date: 2024-06-27T13:58:02.581373
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/AS1P01_118T02_9000000022_00216cztM0_level2.evt modeM0/AS1P01_118T02_9000000022_00216cztM0_level2_quad_clean.evt
Size (bytes)650,266,56050,086,080
Size620.1 MB 47.8 MB
Events in quadrant A5,516,006309,896
Events in quadrant B4,955,429313,664
Events in quadrant C4,449,824304,219
Events in quadrant D4,498,182298,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192762
B0176631
C0161781
D0163121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4109400.973473%
B410910.024337%
C410930.073010%
D410990.219031%

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 5814 4110 265 265 4.56% 6.45%
B 5814 4110 74 74 1.27% 1.80%
C 5814 4110 35 35 0.60% 0.85%
D 5814 4110 56 56 0.96% 1.36%

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 15 127 633418 2366.11 1216 1207 267.2
A 0 6 121475 450.11 1216 1207 267.2
A 12 149 27131 97.02 1216 1207 267.2
B 5 46 219742 765.93 1222 1232 285.3
B 15 219 20495 67.52 1222 1232 285.3
B 0 190 19065 62.51 1222 1232 285.3
C 1 1 52395 164.55 1112 1152 311.4
C 9 241 11127 32.03 1112 1152 311.4
C 5 0 8442 23.41 1112 1152 311.4
D 1 4 210597 622.78 1075 1117 336.4
D 13 117 50706 147.43 1075 1117 336.4
D 7 53 37678 108.69 1075 1117 336.4

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