ASTROSAT CZTI

Data Quality Report

Orbit 56635

Creation date: 2026-03-17T21:34:50.065714
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_083T06_9000006558_56635cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56635cztM0_level2_quad_clean.evt
Size (bytes)377,648,64092,021,760
Size360.2 MB 87.8 MB
Events in quadrant A3,397,110591,676
Events in quadrant B3,112,606646,304
Events in quadrant C2,989,631574,255
Events in quadrant D3,985,387530,474

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147441
B0137821
C0136041
D0162011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63522113.321788%
B63531001.574059%
C6353520.818511%
D63531983.116638%

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 7342 6353 135 135 1.84% 2.12%
B 7343 6354 32 32 0.44% 0.50%
C 7343 6354 14 14 0.19% 0.22%
D 7343 6354 134 134 1.82% 2.11%

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 10 251 471848 2830.27 670 652 166.5
A 6 179 131812 787.82 670 652 166.5
A 4 95 85900 512.05 670 652 166.5
B 10 247 150963 1044.03 669 643 144.0
B 0 245 72776 500.99 669 643 144.0
B 8 128 48118 329.73 669 643 144.0
C 1 16 167318 933.96 650 643 178.5
C 13 3 88563 492.66 650 643 178.5
C 12 252 85201 473.82 650 643 178.5
D 6 239 468702 2553.24 647 618 183.3
D 2 249 343755 1871.7 647 618 183.3
D 3 12 201940 1098.14 647 618 183.3

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