ASTROSAT CZTI

Data Quality Report

Orbit 07931

Creation date: 2024-06-27T15:25:39.258436
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_027T01_9000001084_07931cztM0_level2.evt modeM0/AS1A02_027T01_9000001084_07931cztM0_level2_quad_clean.evt
Size (bytes)392,339,52090,855,360
Size374.2 MB 86.6 MB
Events in quadrant A2,697,096578,649
Events in quadrant B2,957,011605,817
Events in quadrant C2,711,618609,308
Events in quadrant D3,138,022568,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117062
B0125692
C0117272
D0131642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5563250.449398%
B5563891.599856%
C5563260.467374%
D5563581.042603%

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 6903 5564 1 1 0.01% 0.02%
B 6903 5564 20 20 0.29% 0.36%
C 6903 5564 0 0 0.00% 0.00%
D 6903 5564 23 23 0.33% 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 15 223 10805 71.17 697 684 142.2
A 0 226 6536 41.15 697 684 142.2
A 12 194 6159 38.5 697 684 142.2
B 4 239 123915 934.16 706 690 131.9
B 11 51 27051 199.84 706 690 131.9
B 0 214 20896 153.18 706 690 131.9
C 13 61 5262 28.51 694 699 160.1
C 1 16 4731 25.19 694 699 160.1
C 14 67 1803 6.9 694 699 160.1
D 5 233 178140 1064.53 682 662 166.7
D 1 52 127595 761.35 682 662 166.7
D 2 152 61520 365.03 682 662 166.7

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