ASTROSAT CZTI

Data Quality Report

Orbit 58147

Creation date: 2026-06-30T07:26:33.736915
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_042T02_9000006586_58147cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58147cztM0_level2_quad_clean.evt
Size (bytes)767,802,24085,504,320
Size732.2 MB 81.5 MB
Events in quadrant A3,094,443664,788
Events in quadrant B12,955,634281,062
Events in quadrant C3,104,397630,028
Events in quadrant D8,756,943553,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136922
B0430942
C0138752
D0306255

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65891031.563211%
B6589420863.864016%
C6589761.153438%
D65886239.456588%

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 7639 6589 8 8 0.10% 0.12%
B 7638 6588 3669 3669 48.04% 55.69%
C 7639 6589 5 5 0.07% 0.08%
D 7638 6588 545 545 7.14% 8.27%

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 11 3 90028 478.33 761 744 186.7
A 3 245 47454 250.24 761 744 186.7
A 3 14 11630 58.32 761 744 186.7
B 10 128 10301871 101053.06 472 453 101.9
B 5 185 383730 3759.8 472 453 101.9
B 4 201 163028 1594.8 472 453 101.9
C 12 252 108612 534.94 739 734 201.7
C 6 223 34283 166.36 739 734 201.7
C 14 254 31928 154.68 739 734 201.7
D 12 110 4595221 22888.16 709 677 200.7
D 8 160 1042125 5188.07 709 677 200.7
D 2 249 141112 699.59 709 677 200.7

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