ASTROSAT CZTI

Data Quality Report

Orbit 18655

Creation date: 2024-06-27T17:53:00.361940
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/AS1A06_003T01_9000002786_18655cztM0_level2.evt modeM0/AS1A06_003T01_9000002786_18655cztM0_level2_quad_clean.evt
Size (bytes)542,260,80068,780,160
Size517.1 MB 65.6 MB
Events in quadrant A3,897,132413,474
Events in quadrant B3,380,206420,679
Events in quadrant C4,187,590395,808
Events in quadrant D4,516,188398,463

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158432
B0141372
C0165522
D0177402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65031191.829925%
B6503961.476242%
C65033285.043826%
D65024146.367272%

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 7653 6503 20 20 0.26% 0.31%
B 7653 6503 2 2 0.03% 0.03%
C 7653 6503 124 124 1.62% 1.91%
D 7652 6502 328 328 4.29% 5.04%

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 13 532929 3081.19 864 849 172.7
A 6 16 25269 141.41 864 849 172.7
A 11 29 10381 55.2 864 849 172.7
B 12 111 19580 116.28 856 836 161.2
B 11 111 17145 101.17 856 836 161.2
B 14 111 15466 90.76 856 836 161.2
C 9 54 718966 3805.35 815 823 188.7
C 9 221 133100 700.92 815 823 188.7
C 14 238 128825 678.27 815 823 188.7
D 7 238 1038040 5303.69 811 789 195.6
D 1 52 290707 1482.41 811 789 195.6
D 1 20 56152 283.08 811 789 195.6

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