ASTROSAT CZTI

Data Quality Report

Orbit 41658

Creation date: 2024-06-27T22:31:14.147180
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_116T01_9000005682_41658cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41658cztM0_level2_quad_clean.evt
Size (bytes)413,104,320104,748,480
Size394.0 MB 99.9 MB
Events in quadrant A3,513,679707,941
Events in quadrant B3,109,942725,256
Events in quadrant C3,584,297675,480
Events in quadrant D4,581,475612,598

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142632
B0136022
C0145912
D0181112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458280.433571%
B6458140.216785%
C64591542.384270%
D64593555.496207%

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 9625 6460 15 15 0.16% 0.23%
B 9625 6460 1 1 0.01% 0.02%
C 9626 6461 137 137 1.42% 2.12%
D 9626 6461 302 302 3.14% 4.67%

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 593144 4025.57 717 701 147.2
A 13 248 130287 880.52 717 701 147.2
A 2 79 14273 92.22 717 701 147.2
B 0 186 120932 871.1 712 692 138.0
B 7 202 113719 818.85 712 692 138.0
B 0 190 31222 221.18 712 692 138.0
C 0 10 405433 2495.58 695 698 162.2
C 15 214 264145 1624.41 695 698 162.2
C 4 254 111689 684.37 695 698 162.2
D 13 249 1295123 7732.75 685 667 167.4
D 2 120 278994 1662.65 685 667 167.4
D 2 249 202729 1207.07 685 667 167.4

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