ASTROSAT CZTI

Data Quality Report

Orbit 12066

Creation date: 2024-06-27T16:22:03.691203
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/AS1A04_176T01_9000001786_12066cztM0_level2.evt modeM0/AS1A04_176T01_9000001786_12066cztM0_level2_quad_clean.evt
Size (bytes)1,416,228,480234,826,560
Size1.3 GB 223.9 MB
Events in quadrant A9,103,9731,504,082
Events in quadrant B13,864,6751,452,886
Events in quadrant C8,062,4291,477,902
Events in quadrant D10,620,2611,412,229

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387485
B0535544
C0371034
D0434254

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183582221.209282%
B1835811216.106330%
C18358740.403094%
D183585322.897919%

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 21224 18360 14 14 0.07% 0.08%
B 21224 18362 680 680 3.20% 3.70%
C 21224 18362 0 0 0.00% 0.00%
D 21224 18360 373 373 1.76% 2.03%

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 1 162 205434 466.82 2149 2108 435.6
A 15 239 156162 353.7 2149 2108 435.6
A 14 63 101269 227.67 2149 2108 435.6
B 4 239 2990757 7517.74 2097 2045 397.6
B 4 206 2204933 5541.1 2097 2045 397.6
B 15 204 253280 631.95 2097 2045 397.6
C 13 61 15199 27.69 2064 2073 474.1
C 0 207 7457 11.36 2064 2073 474.1
C 12 4 6433 9.2 2064 2073 474.1
D 1 52 1672637 3427.69 2039 1981 487.4
D 8 195 758776 1552.72 2039 1981 487.4
D 13 104 135982 274.93 2039 1981 487.4

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