ASTROSAT CZTI

Data Quality Report

Orbit 35745

Creation date: 2022-05-10T17:27:39.041432
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/AS1A09_029T07_9000005128_35745cztM0_level2.evt modeM0/AS1A09_029T07_9000005128_35745cztM0_level2_quad_clean.evt
Size (bytes)434,652,48063,351,360
Size414.5 MB 60.4 MB
Events in quadrant A3,106,606375,487
Events in quadrant B3,630,017387,079
Events in quadrant C2,955,090380,247
Events in quadrant D3,069,379361,520

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130683
B0146032
C0123322
D0132692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59231192.009117%
B59232273.832517%
C5923180.303900%
D5923811.367550%

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 8606 5925 98 98 1.14% 1.65%
B 8606 5925 180 180 2.09% 3.04%
C 8606 5925 14 14 0.16% 0.24%
D 8606 5925 73 73 0.85% 1.23%

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 15 169 322575 2401.0 662 649 134.1
A 10 83 153882 1142.85 662 649 134.1
A 7 48 41247 302.79 662 649 134.1
B 5 172 882773 6918.19 657 640 127.5
B 5 255 64652 502.02 657 640 127.5
B 0 189 52021 402.96 657 640 127.5
C 15 214 251876 1680.51 644 648 149.5
C 0 10 88430 587.19 644 648 149.5
C 15 208 65725 435.31 644 648 149.5
D 13 249 338109 2143.23 642 623 157.5
D 8 195 43297 271.0 642 623 157.5
D 1 52 36546 228.13 642 623 157.5

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