ASTROSAT CZTI

Data Quality Report

Orbit 53809

Creation date: 2025-09-09T10:46:23.436344
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_022T04_9000006506_53809cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53809cztM0_level2_quad_clean.evt
Size (bytes)1,245,450,24064,105,920
Size1.2 GB 61.1 MB
Events in quadrant A17,815,88039,977
Events in quadrant B4,736,468691,645
Events in quadrant C6,665,005583,905
Events in quadrant D16,334,791128,044

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0578777
B0190200
C0247210
D0533930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7139678695.055330%
B71403374.719888%
C714072010.084034%
D7140582481.568627%

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 7138 7138 6406 6406 89.75% 89.75%
B 7140 7140 231 231 3.24% 3.24%
C 7140 7140 613 613 8.59% 8.59%
D 7139 7139 5031 5031 70.47% 70.47%

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 3 63 16108864 186220.79 343 335 86.5
A 8 249 142527 1643.79 343 335 86.5
A 4 249 92336 1063.57 343 335 86.5
B 5 185 1086368 6822.86 730 705 159.1
B 8 234 362724 2275.11 730 705 159.1
B 0 213 167407 1047.64 730 705 159.1
C 15 224 3166484 16318.6 696 688 194.0
C 12 2 203629 1046.09 696 688 194.0
C 14 254 71211 363.52 696 688 194.0
D 8 176 13035939 142496.94 311 296 91.5
D 2 172 707457 7730.21 311 296 91.5
D 1 241 702096 7671.61 311 296 91.5

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