ASTROSAT CZTI

Data Quality Report

Orbit 23938

Creation date: 2024-06-27T19:00:15.834641
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_101T02_9000003544_23938cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23938cztM0_level2_quad_clean.evt
Size (bytes)502,839,36084,870,720
Size479.5 MB 80.9 MB
Events in quadrant A2,955,288558,283
Events in quadrant B2,991,922566,937
Events in quadrant C2,961,477541,955
Events in quadrant D5,911,798482,824

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124181
B0125171
C0124031
D0216882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6012520.864937%
B6013590.981207%
C6013761.263928%
D601290915.119760%

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 7087 6013 0 0 0.00% 0.00%
B 7088 6014 1 1 0.01% 0.02%
C 7088 6014 2 2 0.03% 0.03%
D 7087 6013 604 604 8.52% 10.04%

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 2 250 19723 124.25 762 749 152.7
A 13 254 8627 51.59 762 749 152.7
A 3 137 6596 38.29 762 749 152.7
B 0 189 23040 158.15 750 732 141.1
B 12 111 17120 116.18 750 732 141.1
B 11 111 15378 103.83 750 732 141.1
C 14 238 115688 691.76 718 723 166.2
C 0 10 25140 146.92 718 723 166.2
C 3 233 11464 64.63 718 723 166.2
D 12 218 2363170 14383.37 684 664 164.3
D 8 195 521116 3168.61 684 664 164.3
D 1 52 126201 764.29 684 664 164.3

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