ASTROSAT CZTI

Data Quality Report

Orbit 11284

Creation date: 2024-06-27T16:10:45.998865
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/AS1A04_144T01_9000001652_11284cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11284cztM0_level2_quad_clean.evt
Size (bytes)640,517,76075,625,920
Size610.8 MB 72.1 MB
Events in quadrant A5,581,709453,606
Events in quadrant B4,881,733465,665
Events in quadrant C3,258,502459,027
Events in quadrant D5,196,811418,143

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213793
B0191282
C0145002
D0202042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70865257.408975%
B70865497.747671%
C7086761.072537%
D70864386.181202%

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 8777 7088 293 293 3.34% 4.13%
B 8777 7088 253 253 2.88% 3.57%
C 8777 7088 5 5 0.06% 0.07%
D 8777 7088 260 260 2.96% 3.67%

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 8 5 1982058 11472.07 842 824 172.7
A 8 15 75458 432.16 842 824 172.7
A 1 162 64185 366.88 842 824 172.7
B 4 239 1375162 8398.33 847 827 163.6
B 11 51 73130 441.83 847 827 163.6
B 15 204 38324 229.14 847 827 163.6
C 14 234 22937 114.03 830 833 193.8
C 13 61 6008 26.7 830 833 193.8
C 3 202 2100 6.54 830 833 193.8
D 1 52 1124024 5689.08 811 784 197.4
D 8 195 253023 1277.56 811 784 197.4
D 7 80 223076 1125.88 811 784 197.4

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