ASTROSAT CZTI

Data Quality Report

Orbit 10448

Creation date: 2024-06-27T15:59:21.107241
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/AS1A03_126T01_9000001512_10448cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10448cztM0_level2_quad_clean.evt
Size (bytes)2,813,224,320404,925,120
Size2.6 GB 386.2 MB
Events in quadrant A30,399,5252,388,958
Events in quadrant B18,815,8922,605,064
Events in quadrant C14,709,6122,601,775
Events in quadrant D19,105,3272,454,700

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068020
B068018
C068024
D068024

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012618714142
B0807743599
C0692112617
D0806872931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403
B0407
C0406
D0413

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31827480815.106670%
B3226113554.200118%
C322943921.213848%
D323157002.166177%

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 51681 31901 4098 4098 7.93% 12.85%
B 51681 32516 554 554 1.07% 1.70%
C 51681 32603 6 6 0.01% 0.02%
D 51681 32639 255 255 0.49% 0.78%

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 13 251 15763926 21639.9 3580 3496 728.3
A 3 80 531934 725.57 3580 3496 728.3
A 15 223 104938 139.29 3580 3496 728.3
B 4 239 3234422 4484.87 3789 3700 720.4
B 11 51 281748 385.98 3789 3700 720.4
B 0 214 258194 353.29 3789 3700 720.4
C 14 234 86438 95.27 3744 3764 867.8
C 13 61 27715 27.6 3744 3764 867.8
C 14 67 23346 22.56 3744 3764 867.8
D 8 195 1535738 1709.43 3705 3607 896.3
D 1 20 1022841 1137.18 3705 3607 896.3
D 1 52 905679 1006.46 3705 3607 896.3

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