ASTROSAT CZTI

Data Quality Report

Orbit 07869

Creation date: 2024-06-27T15:25:03.438446
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/AS1A02_071T01_9000001078_07869cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07869cztM0_level2_quad_clean.evt
Size (bytes)485,271,36087,059,520
Size462.8 MB 83.0 MB
Events in quadrant A3,329,298548,198
Events in quadrant B3,446,271557,540
Events in quadrant C4,112,799545,261
Events in quadrant D3,356,588521,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144593
B0146202
C0169422
D0146062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66521001.503307%
B66521241.864101%
C66521422.134696%
D6652660.992183%

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 7682 6653 11 11 0.14% 0.17%
B 7682 6653 47 47 0.61% 0.71%
C 7682 6653 43 43 0.56% 0.65%
D 7682 6653 27 27 0.35% 0.41%

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 15 239 229262 1420.33 794 778 160.9
A 2 79 12381 72.13 794 778 160.9
A 3 1 11346 65.69 794 778 160.9
B 4 239 204444 1324.68 801 782 153.7
B 4 81 76932 495.3 801 782 153.7
B 15 204 39295 250.5 801 782 153.7
C 1 16 1002321 5615.77 769 772 178.3
C 8 229 100569 559.57 769 772 178.3
C 10 22 10863 56.58 769 772 178.3
D 12 233 173196 916.21 767 745 188.2
D 7 71 95369 502.73 767 745 188.2
D 1 52 77106 405.7 767 745 188.2

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