ASTROSAT CZTI

Data Quality Report

Orbit 54129

Creation date: 2025-09-30T06:53:54.527289
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_012T01_9000006512_54129cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54129cztM0_level2_quad_clean.evt
Size (bytes)683,493,120104,538,240
Size651.8 MB 99.7 MB
Events in quadrant A4,008,452707,024
Events in quadrant B7,264,518700,082
Events in quadrant C4,275,785671,176
Events in quadrant D9,094,286497,467

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184210
B0275870
C0190850
D0332780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8476861.014630%
B8477103012.150525%
C84771381.627934%
D8477168419.865518%

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 8754 8754 74 74 0.85% 0.85%
B 8755 8755 547 547 6.25% 6.25%
C 8755 8755 77 77 0.88% 0.88%
D 8755 8741 1527 1527 17.44% 17.47%

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 15 174 265182 1180.42 898 874 223.9
A 3 130 49375 216.61 898 874 223.9
A 0 8 47263 207.18 898 874 223.9
B 5 172 1483056 7926.97 867 834 187.0
B 5 236 1369978 7322.23 867 834 187.0
B 0 213 236003 1257.69 867 834 187.0
C 1 241 345234 1410.22 888 878 244.2
C 13 3 103529 420.38 888 878 244.2
C 12 252 100503 407.99 888 878 244.2
D 8 176 4077451 17962.38 798 761 227.0
D 2 249 489235 2152.27 798 761 227.0
D 10 181 420873 1851.06 798 761 227.0

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