ASTROSAT CZTI

Data Quality Report

Orbit 15322

Creation date: 2024-06-27T17:06:51.836123
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/AS1T02_073T01_9000002260_15322cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15322cztM0_level2_quad_clean.evt
Size (bytes)1,237,890,240218,759,040
Size1.2 GB 208.6 MB
Events in quadrant A8,627,3601,346,986
Events in quadrant B8,840,2271,364,986
Events in quadrant C10,315,5191,334,663
Events in quadrant D8,444,1331,292,985

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381185
B0384274
C0419364
D0383674

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186532981.597598%
B186533651.956790%
C186533341.790597%
D186532351.259851%

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 20799 18655 1 1 0.00% 0.01%
B 20799 18655 19 19 0.09% 0.10%
C 20799 18655 62 62 0.30% 0.33%
D 20799 18656 15 15 0.07% 0.08%

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 9 143 27783 56.89 2230 2176 450.1
A 0 253 19456 38.39 2230 2176 450.1
A 0 226 19267 37.97 2230 2176 450.1
B 0 189 79376 180.74 2223 2160 427.2
B 12 111 53229 119.54 2223 2160 427.2
B 11 111 45939 102.47 2223 2160 427.2
C 3 233 1858923 3731.3 2160 2172 497.6
C 8 128 15798 27.38 2160 2172 497.6
C 13 61 15287 26.36 2160 2172 497.6
D 8 195 73672 134.89 2172 2104 530.6
D 2 234 63803 116.29 2172 2104 530.6
D 10 70 58996 107.23 2172 2104 530.6

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