ASTROSAT CZTI

Data Quality Report

Orbit 50611

Creation date: 2025-02-05T08:40:21.265477
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/AS1T05_239T01_9000006444_50611cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50611cztM0_level2_quad_clean.evt
Size (bytes)628,816,32086,106,240
Size599.7 MB 82.1 MB
Events in quadrant A3,617,511622,279
Events in quadrant B4,073,482669,705
Events in quadrant C3,421,439615,743
Events in quadrant D11,650,924239,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153661
B0169311
C0149831
D0391381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65971061.606791%
B65982674.046681%
C6598891.348894%
D6598417763.307063%

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 7682 6598 71 71 0.92% 1.08%
B 7683 6599 148 148 1.93% 2.24%
C 7683 6599 69 69 0.90% 1.05%
D 7683 6599 3468 3468 45.14% 52.55%

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 3 130 184878 1060.32 692 675 173.7
A 4 3 159099 911.93 692 675 173.7
A 9 96 148524 851.06 692 675 173.7
B 4 170 298596 2033.65 686 663 146.5
B 0 229 175702 1194.79 686 663 146.5
B 5 172 167968 1142.0 686 663 146.5
C 0 177 111864 593.6 678 671 187.3
C 15 232 109014 578.39 678 671 187.3
C 1 13 82339 435.98 678 671 187.3
D 2 226 7855173 50875.04 550 530 154.4
D 2 165 522101 3378.25 550 530 154.4
D 15 154 149631 965.74 550 530 154.4

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