ASTROSAT CZTI

Data Quality Report

Orbit 18545

Creation date: 2024-06-27T17:51:24.570704
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/AS1A05_188T01_9000002756_18545cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18545cztM0_level2_quad_clean.evt
Size (bytes)310,397,76051,649,920
Size296.0 MB 49.3 MB
Events in quadrant A2,671,611331,913
Events in quadrant B1,748,933361,960
Events in quadrant C1,498,655343,246
Events in quadrant D3,265,318301,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100931
B072761
C065001
D0118461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A316435611.251580%
B3164762.402023%
C3164601.896334%
D316353316.851091%

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 3699 3165 211 211 5.70% 6.67%
B 3699 3165 17 17 0.46% 0.54%
C 3699 3164 0 0 0.00% 0.00%
D 3698 3163 453 453 12.25% 14.32%

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 0 13 1228772 15964.88 371 363 76.9
A 13 170 9631 120.45 371 363 76.9
A 13 254 5582 67.83 371 363 76.9
B 7 220 145644 1908.42 389 379 76.1
B 3 64 54286 708.2 389 379 76.1
B 4 80 9226 116.23 389 379 76.1
C 14 238 57271 652.52 369 370 87.2
C 13 61 2702 26.74 369 370 87.2
C 3 233 1159 9.05 369 370 87.2
D 7 238 831430 9677.13 345 333 85.9
D 13 153 577518 6720.63 345 333 85.9
D 1 52 340839 3964.79 345 333 85.9

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