ASTROSAT CZTI

Data Quality Report

Orbit 20220107_A11_068T02_9000004850_level2

Creation date: 2022-01-10T17:04:59.723963
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/AS1A11_068T02_9000004850cztM0_level2_bc.evt modeM0/AS1A11_068T02_9000004850cztM0_level2_quad_clean.evt
Size (bytes)1,304,190,720339,082,560
Size1.2 GB 323.4 MB
Events in quadrant A5,216,5762,207,613
Events in quadrant B7,990,1002,195,830
Events in quadrant C11,162,9492,155,382
Events in quadrant D13,444,2532,011,591

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040
B05040
C05040
D05040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0501260
B0611380
C0718970
D0816810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24705240.097146%
B2470510574.278486%
C247057242.930581%
D2470520248.192674%

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 33039 24708 0 0 0.00% 0.00%
B 33038 24703 90 90 0.27% 0.36%
C 33038 24704 51 51 0.15% 0.21%
D 33039 24702 327 327 0.99% 1.32%

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 6 52501 175.23 1320 1298 292.2
A 10 83 44364 147.38 1320 1298 292.2
A 13 254 39800 131.77 1320 1298 292.2
B 5 172 1472413 5786.12 1294 1268 254.3
B 0 182 845243 3319.42 1294 1268 254.3
B 4 81 111193 432.34 1294 1268 254.3
C 3 233 4088953 14134.51 1265 1256 289.2
C 15 214 1003803 3466.62 1265 1256 289.2
C 0 10 776905 2682.05 1265 1256 289.2
D 8 195 2653328 8485.05 1253 1216 312.6
D 12 6 1483716 4743.05 1253 1216 312.6
D 2 250 1123333 3590.05 1253 1216 312.6

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