ASTROSAT CZTI

Data Quality Report

Orbit 57693

Creation date: 2026-05-28T03:14:41.360775
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_125T09_9000006578_57693cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57693cztM0_level2_quad_clean.evt
Size (bytes)1,591,640,640249,416,640
Size1.5 GB 237.9 MB
Events in quadrant A13,628,0591,637,656
Events in quadrant B10,073,9301,817,558
Events in quadrant C13,698,3871,576,582
Events in quadrant D20,082,0901,238,815

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0533913
B0430963
C0535553
D07258810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1858010865.844995%
B185806713.611410%
C1858010275.527449%
D18579358919.317509%

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 20215 18583 927 927 4.59% 4.99%
B 20215 18583 326 326 1.61% 1.75%
C 20215 18583 852 852 4.21% 4.58%
D 20214 18582 3460 3460 17.12% 18.62%

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 5319491 10873.73 1982 1932 489.0
A 3 128 262499 532.83 1982 1932 489.0
A 3 245 226533 459.28 1982 1932 489.0
B 10 16 669974 1599.25 1959 1882 417.8
B 4 80 602196 1437.0 1959 1882 417.8
B 10 247 289507 688.5 1959 1882 417.8
C 15 224 3310255 6448.85 1897 1877 513.0
C 12 254 1168232 2273.52 1897 1877 513.0
C 12 252 570697 1108.77 1897 1877 513.0
D 8 160 5961187 12050.16 1750 1670 494.6
D 8 240 5717210 11556.84 1750 1670 494.6
D 3 12 536264 1080.95 1750 1670 494.6

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