ASTROSAT CZTI

Data Quality Report

Orbit 34585

Creation date: 2022-02-19T23:01:06.871890
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_038T43_9000004946_34585cztM0_level2.evt modeM0/AS1A09_038T43_9000004946_34585cztM0_level2_quad_clean.evt
Size (bytes)222,552,00043,145,280
Size212.2 MB 41.1 MB
Events in quadrant A1,086,815295,016
Events in quadrant B1,338,509292,584
Events in quadrant C1,188,062290,381
Events in quadrant D2,972,538266,161

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045982
B053261
C047731
D0104331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224660.267142%
B2246703.116652%
C2246140.623330%
D22461838.147818%

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 3859 2247 1 1 0.03% 0.04%
B 3859 2247 49 49 1.27% 2.18%
C 3859 2247 10 10 0.26% 0.45%
D 3859 2247 208 208 5.39% 9.26%

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 22414 397.42 271 265 55.7
A 9 143 12116 212.64 271 265 55.7
A 13 254 5545 94.74 271 265 55.7
B 5 172 222481 4265.76 264 257 52.1
B 15 32 28117 534.79 264 257 52.1
B 0 189 22224 421.67 264 257 52.1
C 15 214 96793 1563.52 263 265 61.7
C 0 10 40850 657.38 263 265 61.7
C 14 67 14260 226.69 263 265 61.7
D 8 195 1641638 23656.72 257 252 69.4
D 7 223 77343 1111.09 257 252 69.4
D 13 249 54818 786.44 257 252 69.4

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