ASTROSAT CZTI

Data Quality Report

Orbit 04600

Creation date: 2024-06-27T14:44:10.358170
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_167T02_9000000574_04600cztM0_level2.evt modeM0/AS1G05_167T02_9000000574_04600cztM0_level2_quad_clean.evt
Size (bytes)509,201,28077,662,080
Size485.6 MB 74.1 MB
Events in quadrant A3,085,592483,199
Events in quadrant B3,315,211485,037
Events in quadrant C4,297,816487,871
Events in quadrant D4,289,563449,835

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135583
B0139982
C0172222
D0173815

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6391520.813644%
B6391630.985761%
C6391480.751056%
D63903735.837246%

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 7571 6392 2 2 0.03% 0.03%
B 7571 6392 13 13 0.17% 0.20%
C 7571 6392 4 4 0.05% 0.06%
D 7571 6392 322 322 4.25% 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 10 253 71943 459.89 757 742 154.8
A 0 50 66646 425.68 757 742 154.8
A 15 174 19745 122.74 757 742 154.8
B 4 48 107073 726.91 768 753 146.3
B 14 167 95517 647.9 768 753 146.3
B 15 204 56740 382.78 768 753 146.3
C 14 48 1358517 7761.81 746 750 174.9
C 9 247 18655 102.36 746 750 174.9
C 10 21 6036 30.22 746 750 174.9
D 13 235 1195637 6813.97 725 704 175.4
D 2 136 132400 750.98 725 704 175.4
D 13 239 48777 274.13 725 704 175.4

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