ASTROSAT CZTI

Data Quality Report

Orbit 24850

Creation date: 2024-06-27T19:10:37.037785
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/AS1A08_003T06_9000003636_24850cztM0_level2.evt modeM0/AS1A08_003T06_9000003636_24850cztM0_level2_quad_clean.evt
Size (bytes)448,663,68092,488,320
Size427.9 MB 88.2 MB
Events in quadrant A3,387,932599,692
Events in quadrant B3,180,359619,675
Events in quadrant C3,520,084571,289
Events in quadrant D3,064,213563,432

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140742
B0134182
C0144262
D0134372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6402951.483911%
B6403320.499766%
C64031862.904888%
D6403160.249883%

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 8567 6404 76 76 0.89% 1.19%
B 8568 6405 0 0 0.00% 0.00%
C 8568 6405 96 96 1.12% 1.50%
D 8568 6405 4 4 0.05% 0.06%

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 6 16 288170 1778.69 802 787 161.6
A 13 254 9781 55.67 802 787 161.6
A 3 137 7404 40.95 802 787 161.6
B 12 111 18679 116.15 803 783 154.1
B 11 111 17073 105.73 803 783 154.1
B 14 111 15736 97.05 803 783 154.1
C 2 16 228380 1267.31 765 770 179.6
C 7 247 189706 1051.97 765 770 179.6
C 14 238 122225 676.25 765 770 179.6
D 1 52 95976 504.74 774 752 188.7
D 2 234 23983 123.14 774 752 188.7
D 12 218 23088 118.39 774 752 188.7

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