ASTROSAT CZTI

Data Quality Report

Orbit 04068

Creation date: 2024-06-27T14:36:58.078445
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/AS1G05_241T04_9000000518_04068cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04068cztM0_level2_quad_clean.evt
Size (bytes)163,575,36012,674,880
Size156.0 MB 12.1 MB
Events in quadrant A1,856,93863,474
Events in quadrant B1,057,90163,907
Events in quadrant C895,10960,784
Events in quadrant D1,014,88558,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067241
B043137
C037901
D042121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186652528.135048%
B1864140.751073%
C186630.160772%
D1866331.768489%

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 1866 1866 421 421 22.56% 22.56%
B 1866 1866 2 2 0.11% 0.11%
C 1866 1866 0 0 0.00% 0.00%
D 1866 1866 27 27 1.45% 1.45%

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 50 1099964 26618.52 195 191 41.3
A 0 226 2235 49.47 195 191 41.3
A 12 194 2003 43.86 195 191 41.3
B 15 204 53840 1126.53 241 235 47.6
B 10 249 22797 474.15 241 235 47.6
B 4 81 19710 409.28 241 235 47.6
C 13 61 1868 30.06 228 229 54.5
C 10 65 1688 26.76 228 229 54.5
C 12 4 1187 17.57 228 229 54.5
D 2 122 92794 1675.33 224 218 55.3
D 10 172 22803 408.72 224 218 55.3
D 2 232 15452 275.69 224 218 55.3

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