ASTROSAT CZTI

Data Quality Report

Orbit 08728

Creation date: 2024-06-27T15:36:21.740637
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/AS1A02_132T01_9000001212_08728cztM0_level2.evt modeM0/AS1A02_132T01_9000001212_08728cztM0_level2_quad_clean.evt
Size (bytes)433,146,240101,082,240
Size413.1 MB 96.4 MB
Events in quadrant A3,166,014649,379
Events in quadrant B3,247,462675,211
Events in quadrant C3,134,833666,719
Events in quadrant D3,147,697636,895

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134003
B0136152
C0131472
D0134672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6207631.014983%
B6207600.966651%
C6207310.499436%
D6207460.741099%

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 7537 6207 10 10 0.13% 0.16%
B 7537 6207 1 1 0.01% 0.02%
C 7537 6208 14 14 0.19% 0.23%
D 7537 6208 19 19 0.25% 0.31%

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 5 16 83917 524.33 785 770 158.6
A 13 251 49363 306.43 785 770 158.6
A 15 174 15475 92.73 785 770 158.6
B 5 255 121879 808.63 802 785 149.8
B 12 111 15846 100.57 802 785 149.8
B 11 111 12755 79.93 802 785 149.8
C 14 234 69429 378.83 781 787 181.2
C 14 67 9503 48.1 781 787 181.2
C 8 208 7709 38.2 781 787 181.2
D 1 52 68318 363.87 767 754 185.7
D 2 14 63425 337.51 767 754 185.7
D 2 152 39870 210.66 767 754 185.7

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