ASTROSAT CZTI

Data Quality Report

Orbit 33576

Creation date: 2024-06-27T20:50:21.128865
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_060T01_9000004808_33576cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33576cztM0_level2_quad_clean.evt
Size (bytes)944,366,400156,009,600
Size900.6 MB 148.8 MB
Events in quadrant A5,204,1661,029,231
Events in quadrant B7,222,548999,322
Events in quadrant C7,678,1711,001,689
Events in quadrant D7,773,637954,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217224
B0283143
C0301973
D0305493

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10692140.130939%
B106926245.836139%
C106922292.141788%
D106924514.218107%

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 13528 10694 0 0 0.00% 0.00%
B 13528 10694 469 469 3.47% 4.39%
C 13528 10694 181 181 1.34% 1.69%
D 13528 10694 400 400 2.96% 3.74%

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 15 169 325592 1279.76 1258 1231 253.5
A 13 254 19021 70.19 1258 1231 253.5
A 3 137 13046 46.62 1258 1231 253.5
B 5 172 1948170 8188.71 1229 1196 237.8
B 5 255 121860 507.49 1229 1196 237.8
B 0 190 92004 381.92 1229 1196 237.8
C 3 233 1843422 6571.19 1209 1220 280.3
C 15 214 450652 1603.14 1209 1220 280.3
C 0 10 393991 1401.03 1209 1220 280.3
D 8 195 946165 3201.63 1203 1169 295.2
D 2 250 712343 2409.45 1203 1169 295.2
D 13 249 411218 1389.24 1203 1169 295.2

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