ASTROSAT CZTI

Data Quality Report

Orbit 00788

Creation date: 2026-03-07T11:36:40.096319
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/AS1T01_001T01_9000000110_00788cztM0_level2.fits modeM0/AS1T01_001T01_9000000110_00788cztM0_level2_quad_clean.evt
Size (bytes)712,506,24084,389,760
Size679.5 MB 80.5 MB
Events in quadrant A6,744,472557,158
Events in quadrant B6,778,957571,001
Events in quadrant C6,300,774543,414
Events in quadrant D6,125,743495,101

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240191
B0240741
C0226541
D0221671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5552771.386888%
B5552510.918588%
C5552230.414265%
D5552771.386888%

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 5567 5553 268 268 4.81% 4.83%
B 5566 5552 193 193 3.47% 3.48%
C 5567 5553 108 108 1.94% 1.94%
D 5567 5553 159 159 2.86% 2.86%

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 8 192 253326 619.07 1675 1683 406.5
A 12 236 24965 57.28 1675 1683 406.5
A 15 233 22575 51.4 1675 1683 406.5
B 15 22 65896 156.92 1730 1738 408.8
B 0 23 56452 133.82 1730 1738 408.8
B 5 191 31249 72.18 1730 1738 408.8
C 9 83 50473 110.68 1577 1636 441.3
C 15 241 34020 73.39 1577 1636 441.3
C 3 111 30955 66.45 1577 1636 441.3
D 1 4 207784 433.53 1537 1590 475.6
D 13 25 115328 239.14 1537 1590 475.6
D 10 85 16867 32.12 1537 1590 475.6

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