ASTROSAT CZTI

Data Quality Report

Orbit 43940

Creation date: 2024-06-27T22:57:26.626065
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_024T02_9000005918_43940cztM0_level2.fits modeM0/AS1A13_024T02_9000005918_43940cztM0_level2_quad_clean.evt
Size (bytes)404,772,48088,718,400
Size386.0 MB 84.6 MB
Events in quadrant A4,448,900591,424
Events in quadrant B2,962,095609,787
Events in quadrant C2,955,219587,966
Events in quadrant D4,185,887509,370

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018113976
B013317610
C013730936
D017198872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01173
B01173
C01184
D01186

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55252234.036199%
B55551953.510351%
C55341392.511746%
D55344448.023130%

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 7022 5670 32 32 0.46% 0.56%
B 7022 5682 103 103 1.47% 1.81%
C 7023 5670 118 118 1.68% 2.08%
D 7022 5659 420 420 5.98% 7.42%

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 889117 7123.13 605 592 124.7
A 15 222 836740 6703.24 605 592 124.7
A 15 223 312687 2502.0 605 592 124.7
B 5 235 358324 3022.43 602 582 118.4
B 0 200 73826 618.81 602 582 118.4
B 0 213 51871 433.32 602 582 118.4
C 14 254 483969 3559.33 586 588 135.8
C 1 241 122915 900.74 586 588 135.8
C 3 233 40781 295.96 586 588 135.8
D 5 235 1064824 7364.05 576 558 144.5
D 1 52 238692 1647.74 576 558 144.5
D 14 226 150924 1040.44 576 558 144.5

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