ASTROSAT CZTI

Data Quality Report

Orbit 58958

Creation date: 2026-08-21T11:03:07.280927
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_58958cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58958cztM0_level2_quad_clean.evt
Size (bytes)630,817,92092,568,960
Size601.6 MB 88.3 MB
Events in quadrant A6,624,105594,279
Events in quadrant B8,080,112524,496
Events in quadrant C3,456,370630,042
Events in quadrant D4,658,194575,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243202
B0287742
C0151812
D0187532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A685686012.543757%
B6856193828.267211%
C6856981.429405%
D68563555.177946%

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 7681 6857 877 877 11.42% 12.79%
B 7681 6857 1493 1493 19.44% 21.77%
C 7681 6857 77 77 1.00% 1.12%
D 7681 6857 329 329 4.28% 4.80%

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 3548813 19861.84 717 701 178.6
A 15 233 183115 1021.13 717 701 178.6
A 3 14 26313 143.37 717 701 178.6
B 6 255 3359736 25173.97 623 600 133.4
B 4 171 911141 6823.76 623 600 133.4
B 2 249 843604 6317.62 623 600 133.4
C 12 252 293502 1466.11 729 724 199.7
C 3 233 120570 600.14 729 724 199.7
C 6 223 118234 588.44 729 724 199.7
D 12 110 1113069 5342.0 719 687 208.2
D 12 248 155560 743.75 719 687 208.2
D 11 129 153032 731.61 719 687 208.2

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