ASTROSAT CZTI

Data Quality Report

Orbit 46484

Creation date: 2024-06-27T23:23:42.377453
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/AS1A13_037T05_9000006216_46484cztM0_level2.fits modeM0/AS1A13_037T05_9000006216_46484cztM0_level2_quad_clean.evt
Size (bytes)2,144,770,560373,152,960
Size2.0 GB 355.9 MB
Events in quadrant A21,964,1642,710,772
Events in quadrant B30,092,5481,864,278
Events in quadrant C10,627,4332,644,565
Events in quadrant D14,861,2922,429,819

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0809034
B01058144
C0491705
D0611314

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239417423.099286%
B23942725330.294044%
C23941810.338332%
D239415832.435153%

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 26051 23943 126 126 0.48% 0.53%
B 26052 23944 5990 5990 22.99% 25.02%
C 26051 23945 6 6 0.02% 0.03%
D 26051 23945 410 410 1.57% 1.71%

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 10 83 10578075 18675.89 2729 2678 566.3
A 0 247 569615 1001.2 2729 2678 566.3
A 13 248 116898 201.71 2729 2678 566.3
B 10 128 18096282 38103.48 2411 2340 474.9
B 5 32 1830799 3850.5 2411 2340 474.9
B 5 255 250009 521.56 2411 2340 474.9
C 3 233 68728 103.72 2689 2704 636.5
C 12 249 34597 50.1 2689 2704 636.5
C 9 54 20338 27.7 2689 2704 636.5
D 1 52 2829448 4226.15 2668 2594 668.9
D 2 249 541605 805.82 2668 2594 668.9
D 13 249 420776 625.18 2668 2594 668.9

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