ASTROSAT CZTI

Data Quality Report

Orbit 56312

Creation date: 2026-02-24T06:58:28.676091
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_049T01_9000006552_56312cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56312cztM0_level2_quad_clean.evt
Size (bytes)1,995,160,320229,331,520
Size1.9 GB 218.7 MB
Events in quadrant A37,442,945731,087
Events in quadrant B12,477,9561,815,908
Events in quadrant C10,711,4801,596,076
Events in quadrant D11,757,1661,492,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01243135
B0510393
C0459343
D0486253

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189591158561.105544%
B189607293.844937%
C189604982.626582%
D189607303.850211%

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 20194 18963 10287 10287 50.94% 54.25%
B 20195 18964 336 336 1.66% 1.77%
C 20195 18964 373 373 1.85% 1.97%
D 20195 18964 718 718 3.56% 3.79%

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 32 24534934 71025.0 1374 1337 345.4
A 4 95 2403692 6954.84 1374 1337 345.4
A 8 25 1592819 4607.35 1374 1337 345.4
B 5 172 1641264 3928.76 1962 1890 417.3
B 5 185 938067 2243.55 1962 1890 417.3
B 0 231 666536 1592.82 1962 1890 417.3
C 12 252 994900 1901.29 1913 1897 522.3
C 12 94 652228 1245.18 1913 1897 522.3
C 5 250 416939 794.68 1913 1897 522.3
D 8 129 1698345 3126.96 1900 1810 542.6
D 2 249 672450 1236.09 1900 1810 542.6
D 3 12 366482 672.14 1900 1810 542.6

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