ASTROSAT CZTI

Data Quality Report

Orbit 22498

Creation date: 2024-06-27T18:41:58.283372
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/AS1A07_144T02_9000003340_22498cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22498cztM0_level2_quad_clean.evt
Size (bytes)503,170,56087,001,920
Size479.9 MB 83.0 MB
Events in quadrant A3,831,988700,195
Events in quadrant B4,000,910712,469
Events in quadrant C1,151,367167
Events in quadrant D5,703,141663,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168302
B0172472
C079902
D0225072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79891251.564651%
B79881992.491237%
C79887988100.000000%
D79894585.732883%

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 8734 7991 0 0 0.00% 0.00%
B 8733 7989 1 1 0.01% 0.01%
C 8732 7987 0 0 0.00% 0.00%
D 8734 7991 237 237 2.71% 2.97%

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 13 254 11817 53.69 994 970 202.0
A 3 137 8900 39.25 994 970 202.0
A 0 226 8583 37.68 994 970 202.0
B 15 33 75338 384.56 995 970 193.4
B 12 111 24113 119.67 995 970 193.4
B 11 111 20974 103.44 995 970 193.4
C 7 119 1135507 671017.03 3 3 1.7
C 7 226 2335 1378.08 3 3 1.7
C 14 238 1246 734.54 3 3 1.7
D 1 52 2044811 8659.16 952 922 236.0
D 2 234 34109 140.6 952 922 236.0
D 13 172 21378 86.66 952 922 236.0

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