ASTROSAT CZTI

Data Quality Report

Orbit 24977

Creation date: 2024-06-27T19:12:12.651188
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/AS1A08_003T17_9000003656_24977cztM0_level2.evt modeM0/AS1A08_003T17_9000003656_24977cztM0_level2_quad_clean.evt
Size (bytes)893,770,560165,142,080
Size852.4 MB 157.5 MB
Events in quadrant A5,757,3911,068,898
Events in quadrant B6,423,6321,071,519
Events in quadrant C6,132,9711,025,934
Events in quadrant D7,927,988991,521

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025593529
B027537527
C026410533
D032253622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02566
B02566
C02566
D02575

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0182
C0171
D0171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121971831.500369%
B122003703.032787%
C122042602.130449%
D122035214.269442%

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 14870 12219 1 1 0.01% 0.01%
B 14871 12227 76 76 0.51% 0.62%
C 14871 12224 9 9 0.06% 0.07%
D 14870 12221 294 294 1.98% 2.41%

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 13 254 18459 56.31 1491 1454 302.0
A 3 137 14264 42.42 1491 1454 302.0
A 0 226 12653 37.09 1491 1454 302.0
B 3 64 541231 1904.93 1467 1428 283.4
B 10 246 86277 299.43 1467 1428 283.4
B 12 111 35951 121.83 1467 1428 283.4
C 7 247 285532 846.31 1430 1441 335.7
C 14 238 224117 663.36 1430 1441 335.7
C 8 128 17028 46.43 1430 1441 335.7
D 1 52 795362 2284.93 1428 1388 347.5
D 8 195 790862 2271.98 1428 1388 347.5
D 7 238 512473 1470.82 1428 1388 347.5

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