ASTROSAT CZTI

Data Quality Report

Orbit 59089

Creation date: 2026-08-30T00:21:51.375627
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_004T02_9000006600_59089cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59089cztM0_level2_quad_clean.evt
Size (bytes)778,371,84081,008,640
Size742.3 MB 77.3 MB
Events in quadrant A4,013,091655,714
Events in quadrant B4,571,320691,220
Events in quadrant C3,124,150629,422
Events in quadrant D16,574,6391,971

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168471
B0183294
C0142911
D0538021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68051792.630419%
B68052163.174137%
C6805470.690669%
D6805679199.794269%

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 7695 6805 119 119 1.55% 1.75%
B 7695 6805 99 99 1.29% 1.45%
C 7695 6805 17 17 0.22% 0.25%
D 7694 6804 5401 5401 70.20% 79.38%

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 15 233 561097 3064.38 744 725 182.9
A 13 248 268106 1462.17 744 725 182.9
A 10 251 148769 809.57 744 725 182.9
B 5 236 918466 5799.97 738 712 158.2
B 10 128 402350 2538.25 738 712 158.2
B 4 171 215535 1357.63 738 712 158.2
C 12 252 72988 359.25 733 727 201.1
C 6 223 64500 317.05 733 727 201.1
C 3 233 41646 203.43 733 727 201.1
D 12 1 14252625 529853.42 86 82 26.9
D 12 110 1267033 47100.25 86 82 26.9
D 1 27 329393 12242.49 86 82 26.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct