ASTROSAT CZTI

Data Quality Report

Orbit 58895

Creation date: 2026-08-17T11:34:51.184888
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_004T07_9000006598_58895cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58895cztM0_level2_quad_clean.evt
Size (bytes)627,909,120100,509,120
Size598.8 MB 95.9 MB
Events in quadrant A3,872,141688,516
Events in quadrant B4,119,883719,107
Events in quadrant C3,821,755649,466
Events in quadrant D10,885,948497,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162470
B0171311
C0164570
D0372960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7017811.154339%
B70161892.693843%
C70171351.923899%
D7017168624.027362%

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 7017 7017 54 54 0.77% 0.77%
B 7016 7016 94 94 1.34% 1.34%
C 7017 7017 83 83 1.18% 1.18%
D 7017 7017 1924 1924 27.42% 27.42%

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 14 238 438584 2249.82 786 764 194.6
A 0 24 179202 916.94 786 764 194.6
A 3 14 100734 513.72 786 764 194.6
B 15 32 294748 1761.48 769 739 166.9
B 4 201 227971 1361.4 769 739 166.9
B 0 171 109069 649.03 769 739 166.9
C 12 252 517830 2482.9 758 749 208.3
C 12 249 132908 634.6 758 749 208.3
C 6 223 84859 403.88 758 749 208.3
D 12 110 6394940 31611.33 713 683 202.3
D 2 249 541356 2672.93 713 683 202.3
D 7 222 510821 2521.97 713 683 202.3

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