ASTROSAT CZTI

Data Quality Report

Orbit 58859

Creation date: 2026-08-14T13:50:29.975634
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_58859cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58859cztM0_level2_quad_clean.evt
Size (bytes)580,703,04090,097,920
Size553.8 MB 85.9 MB
Events in quadrant A8,254,900430,530
Events in quadrant B5,869,270609,425
Events in quadrant C3,437,070633,432
Events in quadrant D3,419,603593,654

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289342
B0218213
C0146542
D0147902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6619241736.516090%
B6619116917.661278%
C66191231.858287%
D66191301.964043%

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 8639 6619 2211 2211 25.59% 33.40%
B 8639 6619 811 811 9.39% 12.25%
C 8639 6620 43 43 0.50% 0.65%
D 8639 6620 60 60 0.69% 0.91%

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 15 233 5129528 35347.14 585 569 145.1
A 12 114 309866 2131.58 585 569 145.1
A 3 14 274778 1889.76 585 569 145.1
B 5 185 1701373 11271.49 699 671 150.9
B 5 172 774388 5127.85 699 671 150.9
B 4 236 463326 3066.27 699 671 150.9
C 6 223 162730 787.82 741 733 205.6
C 3 233 137382 664.55 741 733 205.6
C 12 249 64728 311.22 741 733 205.6
D 11 129 161352 767.24 738 705 209.4
D 5 32 161033 765.71 738 705 209.4
D 12 248 83858 397.13 738 705 209.4

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