ASTROSAT CZTI

Data Quality Report

Orbit 58255

Creation date: 2026-07-04T21:25:02.785268
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_044T03_9000006588_58255cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58255cztM0_level2_quad_clean.evt
Size (bytes)790,087,68099,498,240
Size753.5 MB 94.9 MB
Events in quadrant A5,242,891715,556
Events in quadrant B11,280,557512,676
Events in quadrant C3,507,361689,932
Events in quadrant D8,633,660571,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209650
B0388110
C0161700
D0309240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75194285.692246%
B7519281337.411890%
C7519350.465487%
D7520119915.944149%

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 7519 7519 375 375 4.99% 4.99%
B 7519 7519 2337 2337 31.08% 31.08%
C 7519 7519 21 21 0.28% 0.28%
D 7520 7520 1013 1013 13.47% 13.47%

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 13 248 644103 3158.7 807 784 203.7
A 4 238 629225 3085.65 807 784 203.7
A 7 64 593035 2907.95 807 784 203.7
B 4 206 5018602 34740.32 663 640 144.4
B 6 255 2385276 16509.29 663 640 144.4
B 0 156 285188 1969.98 663 640 144.4
C 6 223 112272 506.94 791 781 219.9
C 15 219 49544 221.72 791 781 219.9
C 12 249 43034 192.12 791 781 219.9
D 12 110 2496359 11368.78 758 725 219.5
D 8 160 1078480 4909.68 758 725 219.5
D 6 29 936724 4263.91 758 725 219.5

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