ASTROSAT CZTI

Data Quality Report

Orbit 51569

Creation date: 2025-04-10T22:13:34.606800
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_037T05_9000006460_51569cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51569cztM0_level2_quad_clean.evt
Size (bytes)837,990,72085,832,640
Size799.2 MB 81.9 MB
Events in quadrant A7,327,905590,047
Events in quadrant B6,213,056643,656
Events in quadrant C12,344,064299,555
Events in quadrant D4,606,954590,354

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265361
B0231191
C0413531
D0183281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6818110016.133764%
B681898614.461719%
C6818387856.878850%
D68183344.898797%

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 7808 6819 593 593 7.59% 8.70%
B 7808 6819 620 620 7.94% 9.09%
C 7808 6819 3534 3534 45.26% 51.83%
D 7808 6819 187 187 2.39% 2.74%

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 12 3 1448473 8051.91 738 719 179.8
A 7 64 1224799 6807.91 738 719 179.8
A 12 250 856486 4759.48 738 719 179.8
B 10 44 1364911 8641.9 736 710 157.9
B 4 81 1102781 6981.37 736 710 157.9
B 4 174 246965 1559.97 736 710 157.9
C 15 198 9206873 63429.98 530 527 145.1
C 3 242 531605 3659.03 530 527 145.1
C 13 3 275515 1894.62 530 527 145.1
D 8 176 684183 3311.81 744 720 206.4
D 2 249 249403 1205.03 744 720 206.4
D 6 42 195017 941.49 744 720 206.4

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