ASTROSAT CZTI

Data Quality Report

Orbit 35695

Creation date: 2022-05-06T12:04:39.606274
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/AS1A09_029T04_9000005110_35695cztM0_level2.evt modeM0/AS1A09_029T04_9000005110_35695cztM0_level2_quad_clean.evt
Size (bytes)159,716,16041,578,560
Size152.3 MB 39.7 MB
Events in quadrant A1,127,077278,336
Events in quadrant B1,152,862279,680
Events in quadrant C1,045,785277,411
Events in quadrant D1,358,232263,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046970
B049120
C045120
D055430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A221820.090171%
B2218351.577998%
C221800.000000%
D2218632.840397%

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 2218 2218 0 0 0.00% 0.00%
B 2218 2218 30 30 1.35% 1.35%
C 2218 2218 0 0 0.00% 0.00%
D 2218 2218 55 55 2.48% 2.48%

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 15 169 88588 1627.49 256 251 54.3
A 10 83 36778 672.96 256 251 54.3
A 13 6 8627 154.32 256 251 54.3
B 5 172 96811 1949.09 249 243 49.5
B 5 255 41682 836.39 249 243 49.5
B 15 85 15928 316.58 249 243 49.5
C 15 214 91968 1590.45 243 244 57.7
C 4 254 4488 73.58 243 244 57.7
C 13 61 1643 24.25 243 244 57.7
D 2 250 239393 3871.12 246 238 61.8
D 10 118 93025 1501.91 246 238 61.8
D 13 249 44844 722.02 246 238 61.8

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