ASTROSAT CZTI

Data Quality Report

Orbit 15518

Creation date: 2024-06-27T17:09:44.168418
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/AS1T02_085T01_9000002296_15518cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15518cztM0_level2_quad_clean.evt
Size (bytes)676,474,56078,197,760
Size645.1 MB 74.6 MB
Events in quadrant A3,968,564506,099
Events in quadrant B3,394,580516,249
Events in quadrant C3,360,329492,821
Events in quadrant D9,318,643394,193

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158242
B0139441
C0139041
D0321001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65633224.906293%
B65631171.782721%
C65631291.965565%
D6563252538.473259%

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 7684 6564 140 140 1.82% 2.13%
B 7684 6564 4 4 0.05% 0.06%
C 7684 6564 0 0 0.00% 0.00%
D 7684 6564 2162 2162 28.14% 32.94%

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 0 253 498324 3004.44 826 809 165.6
A 14 238 236855 1425.45 826 809 165.6
A 14 237 55356 329.4 826 809 165.6
B 0 189 58934 379.95 824 806 153.0
B 12 111 17098 106.49 824 806 153.0
B 0 219 16478 102.44 824 806 153.0
C 3 233 129482 706.93 791 796 182.0
C 14 238 123613 674.69 791 796 182.0
C 0 207 15997 83.5 791 796 182.0
D 12 221 6540735 42607.17 636 617 153.5
D 1 52 141162 915.61 636 617 153.5
D 5 222 83029 536.89 636 617 153.5

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