ASTROSAT CZTI

Data Quality Report

Orbit 39234

Creation date: 2024-06-27T22:02:06.443270
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/AS1A12_083T01_9000005448_39234cztM0_level2.fits modeM0/AS1A12_083T01_9000005448_39234cztM0_level2_quad_clean.evt
Size (bytes)408,790,08053,231,040
Size389.9 MB 50.8 MB
Events in quadrant A2,581,235413,609
Events in quadrant B1,704,029427,890
Events in quadrant C2,065,193403,984
Events in quadrant D8,493,849105,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100502
B075181
C085861
D0277311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36841373.718784%
B368470.190011%
C3684521.411509%
D3684286877.850163%

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 5057 3685 123 123 2.43% 3.34%
B 5057 3685 0 0 0.00% 0.00%
C 5057 3685 43 43 0.85% 1.17%
D 5057 3685 2514 2514 49.71% 68.22%

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 13 248 718332 8513.04 411 403 84.3
A 10 83 257574 3049.47 411 403 84.3
A 10 255 16255 187.97 411 403 84.3
B 5 172 31976 385.04 411 401 82.0
B 0 190 30819 370.93 411 401 82.0
B 0 230 12164 143.44 411 401 82.0
C 9 187 250237 2625.42 401 406 95.2
C 15 214 151442 1587.21 401 406 95.2
C 3 233 60004 626.3 401 406 95.2
D 12 235 7055053 109506.7 260 253 64.4
D 2 249 180202 2793.22 260 253 64.4
D 12 227 110407 1709.84 260 253 64.4

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