ASTROSAT CZTI

Data Quality Report

Orbit 15956

Creation date: 2024-06-27T17:15:42.106849
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/AS1T02_087T01_9000002352_15956cztM0_level2.evt modeM0/AS1T02_087T01_9000002352_15956cztM0_level2_quad_clean.evt
Size (bytes)116,254,0806,762,240
Size110.9 MB 6.4 MB
Events in quadrant A814,30021,457
Events in quadrant B873,45121,459
Events in quadrant C932,12220,724
Events in quadrant D788,72321,736

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035532
B036421
C038351
D035561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16081016.281095%
B16081267.835821%
C16081438.893035%
D1608774.788557%

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 1864 1610 0 0 0.00% 0.00%
B 1864 1610 2 2 0.11% 0.12%
C 1864 1610 8 8 0.43% 0.50%
D 1864 1610 1 1 0.05% 0.06%

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 0 226 1883 36.59 212 206 45.8
A 3 137 1620 30.85 212 206 45.8
A 12 194 1549 29.3 212 206 45.8
B 4 173 18851 407.88 214 207 45.7
B 12 111 5495 115.69 214 207 45.7
B 15 222 4910 102.89 214 207 45.7
C 9 236 105032 2055.38 203 203 51.0
C 14 238 29781 579.94 203 203 51.0
C 3 233 5438 102.64 203 203 51.0
D 2 234 5889 105.64 208 202 53.8
D 2 120 3951 69.64 208 202 53.8
D 14 226 2048 34.29 208 202 53.8

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