ASTROSAT CZTI

Data Quality Report

Orbit 21135

Creation date: 2024-06-27T18:23:58.838992
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/AS1A06_009T03_9000003122_21135cztM0_level2.evt modeM0/AS1A06_009T03_9000003122_21135cztM0_level2_quad_clean.evt
Size (bytes)1,597,524,480222,468,480
Size1.5 GB 212.2 MB
Events in quadrant A12,001,7941,363,169
Events in quadrant B10,745,0931,434,050
Events in quadrant C9,874,9931,357,758
Events in quadrant D14,456,3281,251,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0517933697
B0475923924
C0449023636
D0599633852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0542
B0530
C0553
D0541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043337
B043347
C043340
D043442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193336283.248332%
B193112941.522448%
C193623101.601074%
D193138204.245845%

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 26492 19694 317 317 1.20% 1.61%
B 26493 19716 52 52 0.20% 0.26%
C 26493 19748 36 36 0.14% 0.18%
D 26491 19716 631 631 2.38% 3.20%

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 15 192 2485674 5037.98 2470 2428 492.9
A 13 254 25708 47.23 2470 2428 492.9
A 0 226 21622 38.94 2470 2428 492.9
B 7 220 335008 713.25 2510 2457 466.3
B 0 219 215851 457.68 2510 2457 466.3
B 0 182 126771 266.62 2510 2457 466.3
C 14 238 380475 680.39 2392 2412 555.7
C 0 10 143311 253.57 2392 2412 555.7
C 3 233 25153 40.93 2392 2412 555.7
D 1 52 1448719 2557.79 2346 2285 565.5
D 1 239 1028299 1814.34 2346 2285 565.5
D 7 223 929937 1640.41 2346 2285 565.5

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