ASTROSAT CZTI

Data Quality Report

Orbit 15923

Creation date: 2024-06-27T17:15:11.819067
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/AS1A04_143T01_9000002344_15923cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15923cztM0_level2_quad_clean.evt
Size (bytes)651,905,28097,064,640
Size621.7 MB 92.6 MB
Events in quadrant A9,500,051503,425
Events in quadrant B3,344,866694,231
Events in quadrant C3,362,671656,560
Events in quadrant D3,102,254638,166

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326853
B0139722
C0137852
D0135692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6391217934.094821%
B63911382.159286%
C63911121.752464%
D6391550.860585%

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 9057 6394 1781 1781 19.66% 27.85%
B 9057 6394 4 4 0.04% 0.06%
C 9057 6394 0 0 0.00% 0.00%
D 9057 6394 11 11 0.12% 0.17%

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 6911347 51264.11 671 658 134.8
A 9 143 7498 50.74 671 658 134.8
A 0 226 5764 37.88 671 658 134.8
B 0 189 39611 247.14 827 805 157.0
B 4 173 23937 147.32 827 805 157.0
B 12 111 18192 110.73 827 805 157.0
C 3 233 144567 773.71 792 801 185.8
C 14 238 120488 644.12 792 801 185.8
C 0 207 9751 48.16 792 801 185.8
D 10 70 59680 302.92 798 776 194.5
D 2 234 28593 143.05 798 776 194.5
D 2 120 15760 77.06 798 776 194.5

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