ASTROSAT CZTI

Data Quality Report

Orbit 21917

Creation date: 2024-06-27T18:33:55.833678
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_100T03_9000003242_21917cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21917cztM0_level2_quad_clean.evt
Size (bytes)452,975,040123,592,320
Size432.0 MB 117.9 MB
Events in quadrant A3,217,651820,310
Events in quadrant B3,294,474839,103
Events in quadrant C3,228,742824,168
Events in quadrant D3,527,983798,637

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139692
B0140673
C0138062
D0149632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6610370.559758%
B6609470.711151%
C6609761.149947%
D6609620.938115%

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 7520 6611 19 19 0.25% 0.29%
B 7519 6610 16 16 0.21% 0.24%
C 7519 6610 6 6 0.08% 0.09%
D 7519 6610 35 35 0.47% 0.53%

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 4 2 160433 1014.23 790 774 157.4
A 13 254 11038 65.2 790 774 157.4
A 5 16 8866 51.4 790 774 157.4
B 3 64 93697 625.75 795 777 148.5
B 0 190 26032 170.07 795 777 148.5
B 0 230 22560 146.69 795 777 148.5
C 14 238 124396 690.09 777 784 179.1
C 10 22 68028 375.41 777 784 179.1
C 0 10 8048 40.55 777 784 179.1
D 1 52 253478 1358.11 778 756 186.1
D 12 227 153467 820.66 778 756 186.1
D 7 238 51620 273.34 778 756 186.1

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