ASTROSAT CZTI

Data Quality Report

Orbit 56653

Creation date: 2026-03-19T02:29:32.068641
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_56653cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56653cztM0_level2_quad_clean.evt
Size (bytes)484,859,52090,311,040
Size462.4 MB 86.1 MB
Events in quadrant A3,578,453612,827
Events in quadrant B4,787,788621,387
Events in quadrant C4,387,365534,228
Events in quadrant D4,705,657526,716

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
A0153781
B0185481
C0175011
D0184927

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62871612.560840%
B62875959.463973%
C62885338.476463%
D62873685.853348%

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 7472 6288 129 129 1.73% 2.05%
B 7472 6288 506 506 6.77% 8.05%
C 7473 6289 538 538 7.20% 8.55%
D 7472 6288 387 387 5.18% 6.15%

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 3 384847 2332.69 668 651 164.7
A 10 251 369961 2242.31 668 651 164.7
A 12 194 60900 365.81 668 651 164.7
B 4 21 1685664 12175.1 648 625 138.4
B 5 185 141984 1021.38 648 625 138.4
B 10 247 103267 741.63 648 625 138.4
C 15 230 1360028 8025.32 618 612 169.4
C 1 16 219257 1290.77 618 612 169.4
C 12 112 129790 762.6 618 612 169.4
D 2 249 957735 5389.64 624 596 177.6
D 12 3 452590 2545.17 624 596 177.6
D 3 12 209513 1176.41 624 596 177.6

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