ASTROSAT CZTI

Data Quality Report

Orbit 36422

Creation date: 2022-07-19T02:30:20.986625
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/AS1C07_009T01_9000005200_36422cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36422cztM0_level2_quad_clean.evt
Size (bytes)171,391,68027,334,080
Size163.5 MB 26.1 MB
Events in quadrant A1,029,359173,778
Events in quadrant B1,667,584171,938
Events in quadrant C1,203,238170,615
Events in quadrant D1,151,240164,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042402
B062071
C046841
D047341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A201540.198511%
B201520810.322581%
C2015743.672457%
D2015271.339950%

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 4108 2016 0 0 0.00% 0.00%
B 4108 2016 130 130 3.16% 6.45%
C 4108 2016 58 58 1.41% 2.88%
D 4108 2016 24 24 0.58% 1.19%

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 10 83 83630 1675.18 241 235 49.8
A 9 143 6829 132.46 241 235 49.8
A 13 254 3376 63.09 241 235 49.8
B 5 172 595168 13207.19 228 222 45.0
B 5 255 96913 2146.44 228 222 45.0
B 4 232 29045 639.84 228 222 45.0
C 0 10 188150 3434.82 232 233 54.7
C 15 214 87697 1598.7 232 233 54.7
C 0 207 15020 270.27 232 233 54.7
D 2 250 103984 1816.25 235 229 57.1
D 2 137 42073 732.49 235 229 57.1
D 12 16 24480 424.52 235 229 57.1

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