ASTROSAT CZTI

Data Quality Report

Orbit 18325

Creation date: 2024-06-27T17:48:22.731338
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_006T01_9000002720_18325cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18325cztM0_level2_quad_clean.evt
Size (bytes)487,802,88069,301,440
Size465.2 MB 66.1 MB
Events in quadrant A3,257,268422,761
Events in quadrant B3,369,222426,650
Events in quadrant C4,158,345410,673
Events in quadrant D3,569,795407,369

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131502
B0135192
C0165202
D0141502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6170761.231767%
B61701071.734198%
C61701632.641815%
D6170821.329011%

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 7495 6171 1 1 0.01% 0.02%
B 7495 6171 1 1 0.01% 0.02%
C 7495 6171 7 7 0.09% 0.11%
D 7495 6171 12 12 0.16% 0.19%

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 0 226 7508 39.64 846 830 168.5
A 4 2 6456 33.4 846 830 168.5
A 12 194 6271 32.3 846 830 168.5
B 0 189 18257 110.59 847 829 157.6
B 12 111 17165 103.66 847 829 157.6
B 0 197 16590 100.01 847 829 157.6
C 3 233 852077 4546.6 815 822 187.2
C 14 238 127989 679.21 815 822 187.2
C 13 61 5962 27.45 815 822 187.2
D 2 69 195431 972.46 829 808 200.1
D 2 33 46544 228.53 829 808 200.1
D 13 168 42975 210.69 829 808 200.1

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