ASTROSAT CZTI

Data Quality Report

Orbit 05885

Creation date: 2024-06-27T15:00:26.835320
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/AS1G06_023T01_9000000762_05885cztM0_level2.evt modeM0/AS1G06_023T01_9000000762_05885cztM0_level2_quad_clean.evt
Size (bytes)511,107,84090,763,200
Size487.4 MB 86.6 MB
Events in quadrant A3,014,217589,546
Events in quadrant B3,838,046581,066
Events in quadrant C2,937,431570,564
Events in quadrant D5,227,994533,666

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138473
B0163152
C0137422
D0203722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6796280.412007%
B6796841.236021%
C6796130.191289%
D67963044.473220%

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 7656 6797 4 4 0.05% 0.06%
B 7656 6797 14 14 0.18% 0.21%
C 7656 6797 0 0 0.00% 0.00%
D 7656 6797 187 187 2.44% 2.75%

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 15 236 40254 253.68 765 748 155.7
A 13 251 14516 88.41 765 748 155.7
A 15 234 13448 81.55 765 748 155.7
B 4 200 557424 3779.47 773 755 147.3
B 15 204 113791 767.45 773 755 147.3
B 0 214 66662 447.47 773 755 147.3
C 1 16 7433 38.44 749 751 173.8
C 13 61 6213 31.42 749 751 173.8
C 6 15 2650 10.92 749 751 173.8
D 1 20 1437269 8017.21 734 711 179.2
D 2 152 534854 2980.97 734 711 179.2
D 2 14 163681 909.51 734 711 179.2

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