ASTROSAT CZTI

Data Quality Report

Orbit 49663

Creation date: 2024-12-03T15:47:03.190804
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/AS1T05_233T01_9000006438_49663cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49663cztM0_level2_quad_clean.evt
Size (bytes)1,201,651,20050,901,120
Size1.1 GB 48.5 MB
Events in quadrant A15,080,758307,172
Events in quadrant B4,085,628619,614
Events in quadrant C9,687,98542,877
Events in quadrant D15,160,552142,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0489310
B0162930
C0329750
D0491530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6030579896.152570%
B60313846.367103%
C6031602199.834190%
D6031592898.292157%

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 7050 6031 5762 5762 81.73% 95.54%
B 7051 6032 221 221 3.13% 3.66%
C 7051 6031 1230 1230 17.44% 20.39%
D 7051 6031 5362 5362 76.05% 88.91%

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 5114844 47655.42 362 348 107.3
A 12 50 2301243 21439.09 362 348 107.3
A 0 99 861217 8021.33 362 348 107.3
B 7 0 668139 4883.9 639 617 136.7
B 4 206 379684 2773.43 639 617 136.7
B 5 172 116087 844.83 639 617 136.7
C 15 180 3632469 118177.32 62 60 30.7
C 15 163 1052750 34248.37 62 60 30.7
C 15 181 989129 32178.51 62 60 30.7
D 15 40 3254541 41971.87 187 176 77.5
D 9 49 2024565 26108.75 187 176 77.5
D 12 191 1409340 18174.13 187 176 77.5

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