ASTROSAT CZTI

Data Quality Report

Orbit 56588

Creation date: 2026-03-14T19:15:11.282683
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/AS1A14_083T06_9000006558_56588cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56588cztM0_level2_quad_clean.evt
Size (bytes)1,828,221,120254,782,080
Size1.7 GB 243.0 MB
Events in quadrant A26,494,1671,296,656
Events in quadrant B10,577,0601,947,629
Events in quadrant C13,670,4951,565,609
Events in quadrant D15,416,9321,551,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0923094
B0443962
C0549662
D0593412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19637571129.082854%
B196374752.418903%
C1963719219.782553%
D1963813156.696201%

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 20516 19636 4778 4778 23.29% 24.33%
B 20517 19637 47 47 0.23% 0.24%
C 20517 19639 1466 1466 7.15% 7.46%
D 20518 19639 1156 1156 5.63% 5.89%

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 7 64 15288859 33181.07 1880 1832 460.7
A 4 249 2018527 4377.31 1880 1832 460.7
A 4 159 633649 1371.38 1880 1832 460.7
B 5 185 994524 2222.3 2107 2024 446.6
B 4 21 767988 1715.06 2107 2024 446.6
B 4 206 102753 225.54 2107 2024 446.6
C 15 230 2727849 5074.46 1983 1966 537.2
C 13 3 1584098 2945.27 1983 1966 537.2
C 5 250 1030486 1914.68 1983 1966 537.2
D 6 239 1888812 3296.63 2031 1937 572.4
D 10 199 1416282 2471.05 2031 1937 572.4
D 2 249 1368341 2387.29 2031 1937 572.4

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