ASTROSAT CZTI

Data Quality Report

Orbit 53784

Creation date: 2025-09-07T18:48:02.626881
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_53784cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53784cztM0_level2_quad_clean.evt
Size (bytes)2,522,229,120199,909,440
Size2.3 GB 190.6 MB
Events in quadrant A47,039,82114,621
Events in quadrant B10,466,7371,813,446
Events in quadrant C19,790,2041,449,515
Events in quadrant D14,645,2941,504,001

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015256118
B0438993
C0716549
D0565668

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184471833699.398276%
B184494672.531303%
C18447258714.023961%
D184479545.171573%

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 19829 18452 17552 17552 88.52% 95.12%
B 19829 18452 177 177 0.89% 0.96%
C 19829 18451 2303 2303 11.61% 12.48%
D 19829 18451 932 932 4.70% 5.05%

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 41964569 328349.91 500 486 127.8
A 3 78 2357973 18446.27 500 486 127.8
A 8 6 408575 3193.11 500 486 127.8
B 7 0 1195307 2896.15 1925 1857 412.1
B 5 185 381071 920.24 1925 1857 412.1
B 0 213 373371 901.55 1925 1857 412.1
C 15 224 8252898 16461.68 1816 1799 501.2
C 15 158 2201612 4388.82 1816 1799 501.2
C 9 38 682065 1357.19 1816 1799 501.2
D 1 241 2874991 5312.36 1885 1801 540.9
D 10 172 1464663 2704.75 1885 1801 540.9
D 2 153 637463 1175.3 1885 1801 540.9

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