ASTROSAT CZTI

Data Quality Report

Orbit 58981

Creation date: 2026-08-22T17:19:28.915668
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_58981cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58981cztM0_level2_quad_clean.evt
Size (bytes)656,933,760101,370,240
Size626.5 MB 96.7 MB
Events in quadrant A8,468,645576,203
Events in quadrant B7,016,344657,069
Events in quadrant C3,441,014690,469
Events in quadrant D4,816,084629,580

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302232
B0259672
C0156342
D0194602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7414169722.889129%
B7414144519.490154%
C7414841.132992%
D74143374.545455%

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 7759 7415 1240 1240 15.98% 16.72%
B 7759 7415 751 751 9.68% 10.13%
C 7759 7415 8 8 0.10% 0.11%
D 7759 7415 183 183 2.36% 2.47%

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 14 238 4607340 24649.68 762 742 186.9
A 0 24 449173 2399.53 762 742 186.9
A 3 14 369737 1974.47 762 742 186.9
B 6 255 2035850 12382.34 774 746 164.4
B 4 171 1100761 6692.91 774 746 164.4
B 10 247 140707 851.58 774 746 164.4
C 12 252 156032 699.94 816 811 221.8
C 12 250 21030 91.17 816 811 221.8
C 13 3 19241 83.11 816 811 221.8
D 12 110 752093 3302.32 808 773 227.5
D 6 239 247402 1084.02 808 773 227.5
D 7 222 119873 523.49 808 773 227.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct