ASTROSAT CZTI

Data Quality Report

Orbit 07173

Creation date: 2024-06-27T15:16:30.297394
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/AS1G06_102T01_9000000978_07173cztM0_level2.evt modeM0/AS1G06_102T01_9000000978_07173cztM0_level2_quad_clean.evt
Size (bytes)1,024,689,600167,803,200
Size977.2 MB 160.0 MB
Events in quadrant A6,226,3071,049,237
Events in quadrant B6,701,5431,066,697
Events in quadrant C6,100,6151,052,160
Events in quadrant D11,082,352972,286

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280164
B0292453
C0278583
D0419436

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136351290.946095%
B136351571.151448%
C136351050.770077%
D1363411458.398122%

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 37758 13636 0 0 0.00% 0.00%
B 37758 13636 9 9 0.02% 0.07%
C 37758 13636 5 5 0.01% 0.04%
D 37758 13636 1088 1088 2.88% 7.98%

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 14 111 80683 244.58 1587 1554 323.5
A 8 15 21428 61.43 1587 1554 323.5
A 0 226 15127 41.95 1587 1554 323.5
B 0 214 170335 555.51 1600 1563 303.8
B 0 219 98117 317.81 1600 1563 303.8
B 15 204 80927 261.23 1600 1563 303.8
C 4 254 62576 171.4 1539 1543 356.1
C 9 68 24380 64.13 1539 1543 356.1
C 13 61 11966 29.27 1539 1543 356.1
D 12 221 3693844 10103.61 1496 1448 365.5
D 12 233 553482 1510.55 1496 1448 365.5
D 8 195 526640 1437.1 1496 1448 365.5

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