ASTROSAT CZTI

Data Quality Report

Orbit 42546

Creation date: 2024-06-27T22:41:27.346365
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/AS1A12_102T01_9000005812_42546cztM0_level2.fits modeM0/AS1A12_102T01_9000005812_42546cztM0_level2_quad_clean.evt
Size (bytes)306,547,20088,171,200
Size292.3 MB 84.1 MB
Events in quadrant A2,808,017599,589
Events in quadrant B2,786,916607,054
Events in quadrant C2,391,701581,939
Events in quadrant D2,965,422526,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112782
B0117132
C0103212
D0124632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5070150.295858%
B50701122.209073%
C5070110.216963%
D50701272.504931%

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 7132 5071 3 3 0.04% 0.06%
B 7132 5071 89 89 1.25% 1.76%
C 7132 5071 6 6 0.08% 0.12%
D 7132 5071 95 95 1.33% 1.87%

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 83 536710 4658.18 568 557 115.1
A 2 79 29932 255.21 568 557 115.1
A 13 248 27102 230.63 568 557 115.1
B 5 172 546958 5145.28 559 545 106.2
B 0 245 25321 233.3 559 545 106.2
B 15 85 15478 140.62 559 545 106.2
C 15 214 212178 1663.5 545 549 127.2
C 14 254 38595 299.06 545 549 127.2
C 15 111 15871 120.44 545 549 127.2
D 1 52 413373 3146.36 541 525 131.2
D 13 249 220295 1674.89 541 525 131.2
D 2 16 81104 614.1 541 525 131.2

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