ASTROSAT CZTI

Data Quality Report

Orbit 56131

Creation date: 2026-02-11T23:52:00.032755
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_083T03_9000006548_56131cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56131cztM0_level2_quad_clean.evt
Size (bytes)680,742,72087,785,280
Size649.2 MB 83.7 MB
Events in quadrant A7,596,638533,139
Events in quadrant B4,790,386647,692
Events in quadrant C8,118,957463,840
Events in quadrant D4,181,322552,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271251
B0189071
C0287271
D0173631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6606127019.224947%
B66054166.298259%
C6606163824.795640%
D66061902.876173%

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 7531 6607 1241 1241 16.48% 18.78%
B 7530 6605 276 276 3.67% 4.18%
C 7531 6606 1421 1421 18.87% 21.51%
D 7531 6607 186 186 2.47% 2.82%

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 12 115 2942212 17917.59 649 633 164.2
A 3 14 1076111 6550.89 649 633 164.2
A 0 8 367122 2232.34 649 633 164.2
B 5 172 881794 6098.84 681 658 144.5
B 5 236 403403 2787.63 681 658 144.5
B 10 247 303241 2094.35 681 658 144.5
C 15 147 2321169 14421.86 581 576 160.9
C 9 38 1822484 11322.67 581 576 160.9
C 15 148 1204665 7483.09 581 576 160.9
D 2 120 668388 3567.65 663 632 187.2
D 2 249 282731 1507.18 663 632 187.2
D 2 31 182817 973.37 663 632 187.2

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