ASTROSAT CZTI

Data Quality Report

Orbit 52125

Creation date: 2025-05-19T13:39:42.852310
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_011T07_9000006470_52125cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52125cztM0_level2_quad_clean.evt
Size (bytes)1,142,231,04074,733,120
Size1.1 GB 71.3 MB
Events in quadrant A5,203,355656,508
Events in quadrant B4,137,354719,311
Events in quadrant C13,510,765340,319
Events in quadrant D18,860,13332,518

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206820
B0175480
C0451890
D0610938

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73783614.892925%
B73781682.277040%
C7378399054.079696%
D7378711396.408241%

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 7378 7378 268 268 3.63% 3.63%
B 7378 7378 104 104 1.41% 1.41%
C 7378 7378 3209 3209 43.49% 43.49%
D 7378 7378 6668 6668 90.38% 90.38%

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 7 206 963070 5159.17 746 727 186.5
A 8 43 360807 1930.41 746 727 186.5
A 4 3 147796 788.45 746 727 186.5
B 0 213 269014 1673.72 754 727 160.3
B 4 81 235309 1463.45 754 727 160.3
B 5 185 126715 785.98 754 727 160.3
C 15 224 5326263 35564.09 537 533 149.8
C 15 193 1999349 13347.67 537 533 149.8
C 15 248 1908469 12740.79 537 533 149.8
D 15 94 8643476 88097.41 338 323 98.1
D 6 42 7024002 71590.53 338 323 98.1
D 12 17 422219 4300.28 338 323 98.1

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