ASTROSAT CZTI

Data Quality Report

Orbit 56886

Creation date: 2026-04-03T19:38:07.141062
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_083T14_9000006564_56886cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56886cztM0_level2_quad_clean.evt
Size (bytes)476,965,44092,119,680
Size454.9 MB 87.9 MB
Events in quadrant A3,499,209622,255
Events in quadrant B3,598,405651,826
Events in quadrant C3,078,406596,706
Events in quadrant D6,972,377463,783

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150041
B0155171
C0140731
D0251941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65181442.209267%
B65192844.356496%
C65191111.702715%
D6519134120.570640%

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 7463 6519 22 22 0.29% 0.34%
B 7464 6520 101 101 1.35% 1.55%
C 7464 6520 29 29 0.39% 0.44%
D 7464 6520 1276 1276 17.10% 19.57%

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 3 14 474759 2739.96 697 678 173.0
A 10 251 254502 1466.98 697 678 173.0
A 7 64 22395 125.51 697 678 173.0
B 10 16 292449 2040.74 666 643 143.0
B 5 185 269829 1882.54 666 643 143.0
B 8 128 164040 1142.71 666 643 143.0
C 13 3 269205 1472.79 666 658 182.3
C 11 244 65018 352.97 666 658 182.3
C 14 254 43108 232.81 666 658 182.3
D 2 249 2197968 12481.83 618 592 176.0
D 8 160 1545979 8778.31 618 592 176.0
D 8 240 326648 1852.11 618 592 176.0

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