ASTROSAT CZTI

Data Quality Report

Orbit 56913

Creation date: 2026-04-05T14:09:27.833180
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_083T14_9000006564_56913cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56913cztM0_level2_quad_clean.evt
Size (bytes)598,633,92082,304,640
Size570.9 MB 78.5 MB
Events in quadrant A5,900,698495,845
Events in quadrant B4,426,596611,622
Events in quadrant C7,493,358430,046
Events in quadrant D3,870,166532,800

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217112
B0172472
C0265462
D0156882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6035121420.115990%
B60354978.235294%
C6036165727.451955%
D60352133.529412%

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 7165 6036 1016 1016 14.18% 16.83%
B 7165 6037 283 283 3.95% 4.69%
C 7166 6037 1565 1565 21.84% 25.92%
D 7165 6037 125 125 1.74% 2.07%

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 7 64 3167967 21433.81 596 579 147.8
A 4 95 137581 927.1 596 579 147.8
A 3 14 108888 732.93 596 579 147.8
B 5 172 789277 6012.42 621 598 131.2
B 5 185 553085 4211.83 621 598 131.2
B 10 16 429103 3266.67 621 598 131.2
C 9 38 4535176 29578.47 560 554 153.3
C 13 3 423510 2758.86 560 554 153.3
C 6 223 130031 844.55 560 554 153.3
D 8 240 241437 1352.22 635 607 178.1
D 2 31 231200 1294.74 635 607 178.1
D 2 249 209234 1171.41 635 607 178.1

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