ASTROSAT CZTI

Data Quality Report

Orbit 58797

Creation date: 2026-08-10T09:46:25.229933
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_106T01_9000006596_58797cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58797cztM0_level2_quad_clean.evt
Size (bytes)1,621,949,760262,992,960
Size1.5 GB 250.8 MB
Events in quadrant A11,213,1321,775,663
Events in quadrant B10,095,7561,943,053
Events in quadrant C10,902,9981,718,036
Events in quadrant D26,319,0361,181,652

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473143
B0435503
C0466353
D0917833

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195088354.280295%
B195083741.917162%
C195096713.439438%
D19509540727.715413%

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 20778 19510 606 606 2.92% 3.11%
B 20778 19510 150 150 0.72% 0.77%
C 20778 19511 543 543 2.61% 2.78%
D 20779 19510 4921 4921 23.68% 25.22%

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 13 248 1117698 2108.69 2129 2074 529.1
A 15 233 1046749 1974.58 2129 2074 529.1
A 3 79 349514 656.71 2129 2074 529.1
B 8 234 266993 580.55 2137 2055 456.4
B 4 236 228439 496.07 2137 2055 456.4
B 4 171 209839 455.31 2137 2055 456.4
C 13 3 1464249 2568.38 2080 2063 569.3
C 14 96 380418 664.59 2080 2063 569.3
C 6 223 245189 427.06 2080 2063 569.3
D 12 110 8148085 15359.45 1868 1788 530.4
D 11 129 8019697 15117.38 1868 1788 530.4
D 15 94 1442816 2716.99 1868 1788 530.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct