ASTROSAT CZTI

Data Quality Report

Orbit 23767

Creation date: 2024-06-27T18:58:29.499785
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_091T10_9000003520_23767cztM0_level2.evt modeM0/AS1A07_091T10_9000003520_23767cztM0_level2_quad_clean.evt
Size (bytes)144,221,76022,296,960
Size137.5 MB 21.3 MB
Events in quadrant A839,600142,892
Events in quadrant B904,406149,334
Events in quadrant C913,925142,282
Events in quadrant D1,610,428133,680

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034251
B036691
C037241
D058151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143390.628053%
B1433201.395673%
C1433493.419400%
D1433976.769016%

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 1433 1433 0 0 0.00% 0.00%
B 1433 1433 1 1 0.07% 0.07%
C 1433 1433 0 0 0.00% 0.00%
D 1433 1433 91 91 6.35% 6.35%

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 2515 51.12 217 213 45.0
A 0 226 1916 37.82 217 213 45.0
A 3 137 1732 33.73 217 213 45.0
B 3 64 21611 506.06 222 217 42.3
B 0 189 6178 141.0 222 217 42.3
B 12 111 4724 106.61 222 217 42.3
C 14 238 34576 668.59 215 216 51.4
C 7 247 27511 531.11 215 216 51.4
C 0 10 13644 261.28 215 216 51.4
D 1 52 362248 6893.15 208 203 52.5
D 13 174 347921 6620.37 208 203 52.5
D 8 195 106857 2030.64 208 203 52.5

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