ASTROSAT CZTI

Data Quality Report

Orbit 58638

Creation date: 2026-07-30T16:29:46.256385
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_004T06_9000006594_58638cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58638cztM0_level2_quad_clean.evt
Size (bytes)637,297,920111,579,840
Size607.8 MB 106.4 MB
Events in quadrant A4,659,707734,995
Events in quadrant B4,760,590784,208
Events in quadrant C6,301,147673,435
Events in quadrant D7,253,155633,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193032
B0193662
C0242088
D0269992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79463414.291467%
B79464085.134659%
C794680910.181223%
D794681310.231563%

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 9292 7947 98 98 1.05% 1.23%
B 9292 7947 116 116 1.25% 1.46%
C 9292 7947 585 585 6.30% 7.36%
D 9292 7947 614 614 6.61% 7.73%

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 12 114 842526 3858.08 888 864 218.2
A 10 17 236993 1082.38 888 864 218.2
A 3 14 71858 325.43 888 864 218.2
B 5 185 449504 2394.66 867 833 187.4
B 8 128 313216 1667.26 867 833 187.4
B 8 234 161931 859.82 867 833 187.4
C 15 217 1393278 6106.55 833 825 228.0
C 12 252 692944 3035.26 833 825 228.0
C 13 3 649148 2843.19 833 825 228.0
D 8 240 1354253 5716.52 837 799 236.8
D 0 19 843527 3559.39 837 799 236.8
D 7 222 760061 3206.86 837 799 236.8

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