ASTROSAT CZTI

Data Quality Report

Orbit 57525

Creation date: 2026-05-16T19:51:31.532484
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_113T09_9000006574_57525cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57525cztM0_level2_quad_clean.evt
Size (bytes)431,239,68094,616,640
Size411.3 MB 90.2 MB
Events in quadrant A2,797,190628,128
Events in quadrant B3,313,521669,728
Events in quadrant C4,972,739578,275
Events in quadrant D4,384,920544,796

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130691
B0140042
C0192281
D0174651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6363280.440044%
B6362460.723043%
C63623635.705753%
D63623775.925809%

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 7468 6364 7 7 0.09% 0.11%
B 7467 6363 10 10 0.13% 0.16%
C 7467 6363 288 288 3.86% 4.53%
D 7467 6363 356 356 4.77% 5.59%

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 14 35714 203.7 697 677 172.0
A 13 248 27766 157.49 697 677 172.0
A 3 14 24612 139.15 697 677 172.0
B 4 206 407067 2774.7 678 653 146.5
B 5 185 49133 330.99 678 653 146.5
B 7 252 45436 305.75 678 653 146.5
C 15 224 2132278 11817.86 657 649 180.4
C 13 3 104296 574.62 657 649 180.4
C 14 246 76403 419.98 657 649 180.4
D 8 240 1145850 6144.76 662 630 186.4
D 2 31 247077 1322.33 662 630 186.4
D 3 12 88387 470.86 662 630 186.4

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