ASTROSAT CZTI

Data Quality Report

Orbit 12789

Creation date: 2024-06-27T16:32:15.071899
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_110T04_9000001886_12789cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12789cztM0_level2_quad_clean.evt
Size (bytes)1,318,066,560340,459,200
Size1.2 GB 324.7 MB
Events in quadrant A8,930,1972,273,857
Events in quadrant B10,983,2972,273,815
Events in quadrant C8,447,2182,273,618
Events in quadrant D10,263,4932,173,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0398315
B0457194
C0389864
D0439834

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19124770.402635%
B191247914.136164%
C19124520.271910%
D191241760.920310%

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 21605 19127 6 6 0.03% 0.03%
B 21605 19127 392 392 1.81% 2.05%
C 21605 19127 11 11 0.05% 0.06%
D 21605 19127 136 136 0.63% 0.71%

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 12 189 265321 595.71 2194 2142 441.8
A 8 15 139543 311.01 2194 2142 441.8
A 15 174 38998 83.42 2194 2142 441.8
B 4 239 1839011 4494.94 2165 2109 408.7
B 3 64 233075 565.18 2165 2109 408.7
B 0 219 160144 386.71 2165 2109 408.7
C 15 208 110765 222.0 2132 2137 489.3
C 13 61 15484 27.28 2132 2137 489.3
C 8 128 13653 23.53 2132 2137 489.3
D 8 195 1389240 2729.52 2115 2049 508.2
D 13 104 254406 496.55 2115 2049 508.2
D 7 80 238317 464.9 2115 2049 508.2

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