ASTROSAT CZTI

Data Quality Report

Orbit 04908

Creation date: 2024-06-27T14:48:43.136159
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/AS1G05_118T01_9000000622_04908cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04908cztM0_level2_quad_clean.evt
Size (bytes)145,293,1206,937,920
Size138.6 MB 6.6 MB
Events in quadrant A718,60626,187
Events in quadrant B687,51426,920
Events in quadrant C636,25627,490
Events in quadrant D2,258,37622,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030082
B029451
C029081
D076781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1424130.912921%
B142430.210674%
C142430.210674%
D142464245.084270%

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 1424 1424 0 0 0.00% 0.00%
B 1424 1424 0 0 0.00% 0.00%
C 1424 1424 0 0 0.00% 0.00%
D 1423 1423 585 585 41.11% 41.11%

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 31 21829 590.96 172 168 36.7
A 8 15 17971 485.71 172 168 36.7
A 13 251 15712 424.08 172 168 36.7
B 15 204 17806 508.73 171 167 34.7
B 4 80 3151 86.06 171 167 34.7
B 15 54 2820 76.52 171 167 34.7
C 1 16 1782 42.13 162 162 38.5
C 13 61 1347 30.82 162 162 38.5
C 14 67 657 12.87 162 162 38.5
D 2 33 1392089 41343.78 129 124 33.7
D 2 63 204524 6071.04 129 124 33.7
D 12 233 81001 2402.19 129 124 33.7

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