ASTROSAT CZTI

Data Quality Report

Orbit 59299

Creation date: 2026-09-13T02:21:54.650148
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_021T06_9000006606_59299cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59299cztM0_level2_quad_clean.evt
Size (bytes)553,579,20093,758,400
Size527.9 MB 89.4 MB
Events in quadrant A3,208,426651,422
Events in quadrant B6,033,823609,165
Events in quadrant C3,267,286628,471
Events in quadrant D7,477,175496,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143762
B0223292
C0143982
D0267602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65021211.860966%
B6503115317.730278%
C6503761.168691%
D6503119418.360757%

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 7587 6503 78 78 1.03% 1.20%
B 7588 6504 1040 1040 13.71% 15.99%
C 7588 6504 50 50 0.66% 0.77%
D 7588 6504 1175 1175 15.48% 18.07%

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 10 251 295523 1728.0 695 678 170.6
A 0 128 80319 466.75 695 678 170.6
A 7 64 36261 208.54 695 678 170.6
B 4 236 2874256 21358.38 639 617 134.5
B 6 255 195275 1446.8 639 617 134.5
B 5 236 182687 1353.24 639 617 134.5
C 12 252 367738 1930.31 692 685 190.2
C 3 233 108979 569.51 692 685 190.2
C 4 5 34329 176.93 692 685 190.2
D 11 129 4455483 24451.56 641 613 182.2
D 12 2 289637 1586.37 641 613 182.2
D 12 110 137919 753.63 641 613 182.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct