ASTROSAT CZTI

Data Quality Report

Orbit 16890

Creation date: 2024-06-27T17:29:01.801712
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/AS1A05_004T06_9000002506_16890cztM0_level2.evt modeM0/AS1A05_004T06_9000002506_16890cztM0_level2_quad_clean.evt
Size (bytes)655,873,92062,130,240
Size625.5 MB 59.3 MB
Events in quadrant A4,989,143358,010
Events in quadrant B3,757,228403,770
Events in quadrant C3,263,907390,909
Events in quadrant D7,414,772276,314

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190143
B0151072
C0135662
D0265092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A646371811.109392%
B64631442.228067%
C6463460.711744%
D6463207432.090361%

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 7754 6465 486 486 6.27% 7.52%
B 7754 6465 73 73 0.94% 1.13%
C 7754 6465 0 0 0.00% 0.00%
D 7754 6465 1011 1011 13.04% 15.64%

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 15 174 1886389 11641.76 805 790 162.0
A 0 226 7099 38.95 805 790 162.0
A 9 143 6570 35.69 805 790 162.0
B 15 35 224003 1411.14 840 821 158.2
B 0 219 187414 1179.8 840 821 158.2
B 10 16 34504 212.97 840 821 158.2
C 14 238 126214 683.93 799 806 183.4
C 3 233 13125 67.18 799 806 183.4
C 7 247 7869 38.52 799 806 183.4
D 1 52 4906435 31601.29 644 626 155.2
D 12 32 34363 217.32 644 626 155.2
D 2 234 21279 133.04 644 626 155.2

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