ASTROSAT CZTI

Data Quality Report

Orbit 24058

Creation date: 2024-06-27T19:01:38.351403
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/AS1A07_165T01_9000003558_24058cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24058cztM0_level2_quad_clean.evt
Size (bytes)445,426,560134,879,040
Size424.8 MB 128.6 MB
Events in quadrant A3,134,508928,966
Events in quadrant B3,248,948939,030
Events in quadrant C3,414,667896,992
Events in quadrant D3,272,236889,550

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129151
B0132441
C0137571
D0134601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6169721.167126%
B6170981.588331%
C61701252.025932%
D6170811.312804%

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 7394 6169 0 0 0.00% 0.00%
B 7395 6171 6 6 0.08% 0.10%
C 7395 6170 2 2 0.03% 0.03%
D 7395 6171 17 17 0.23% 0.28%

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 3 1 28556 175.24 804 789 158.4
A 13 254 9568 55.41 804 789 158.4
A 2 250 8848 50.86 804 789 158.4
B 0 189 78514 536.6 795 778 144.9
B 0 245 33024 222.59 795 778 144.9
B 12 111 16362 107.57 795 778 144.9
C 7 247 230854 1335.44 762 769 172.3
C 14 238 124651 719.02 762 769 172.3
C 0 239 85067 489.27 762 769 172.3
D 1 52 133070 707.04 783 763 187.1
D 8 195 68143 360.07 783 763 187.1
D 11 176 47440 249.44 783 763 187.1

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