ASTROSAT CZTI

Data Quality Report

Orbit 58146

Creation date: 2026-06-30T00:20:01.961554
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_58146cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58146cztM0_level2_quad_clean.evt
Size (bytes)781,511,04084,340,800
Size745.3 MB 80.4 MB
Events in quadrant A3,145,089670,891
Events in quadrant B15,094,270191,708
Events in quadrant C3,339,376633,584
Events in quadrant D6,817,073578,410

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141652
B0496322
C0148632
D0251462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6874821.192901%
B6874533177.553099%
C6874991.440209%
D68732713.942965%

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 7799 6874 1 1 0.01% 0.01%
B 7799 6874 4681 4681 60.02% 68.10%
C 7799 6874 13 13 0.17% 0.19%
D 7798 6873 202 202 2.59% 2.94%

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 87932 457.47 776 757 190.6
A 3 14 39612 203.9 776 757 190.6
A 4 3 14040 69.7 776 757 190.6
B 10 128 13201352 150128.49 410 394 87.9
B 4 201 93113 1054.45 410 394 87.9
B 5 185 52773 595.68 410 394 87.9
C 9 38 152242 736.07 754 744 205.8
C 13 3 92064 443.69 754 744 205.8
C 12 252 80279 386.43 754 744 205.8
D 12 110 3104471 15036.41 732 700 206.4
D 8 160 277228 1339.66 732 700 206.4
D 2 249 154795 746.52 732 700 206.4

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