ASTROSAT CZTI

Data Quality Report

Orbit 54208

Creation date: 2025-10-06T10:14:06.819733
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/AS1C09_004T08_9000006514_54208cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54208cztM0_level2_quad_clean.evt
Size (bytes)481,763,52090,305,280
Size459.4 MB 86.1 MB
Events in quadrant A2,952,492617,572
Events in quadrant B3,084,739667,084
Events in quadrant C3,327,404562,360
Events in quadrant D7,959,001431,101

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137611
B0138741
C0149751
D0281601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6548711.084301%
B6549931.420064%
C65492634.015880%
D6549165725.301573%

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 7478 6548 23 23 0.31% 0.35%
B 7479 6549 23 23 0.31% 0.35%
C 7479 6549 202 202 2.70% 3.08%
D 7479 6550 1648 1648 22.04% 25.16%

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 0 8 105125 605.47 691 673 172.5
A 15 174 52263 299.05 691 673 172.5
A 4 3 34977 198.85 691 673 172.5
B 4 67 127865 869.37 684 658 146.3
B 15 20 51975 350.71 684 658 146.3
B 0 213 49407 333.16 684 658 146.3
C 15 215 375436 2100.86 648 643 178.4
C 15 216 122164 681.17 648 643 178.4
C 12 252 64304 356.84 648 643 178.4
D 8 176 5025166 30197.47 581 554 166.4
D 2 252 281164 1686.44 581 554 166.4
D 11 176 146286 875.84 581 554 166.4

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