ASTROSAT CZTI

Data Quality Report

Orbit 56811

Creation date: 2026-03-29T17:42:22.929931
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_9000006562_56811cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56811cztM0_level2_quad_clean.evt
Size (bytes)544,991,04087,223,680
Size519.7 MB 83.2 MB
Events in quadrant A3,245,704628,813
Events in quadrant B10,121,142407,076
Events in quadrant C2,868,418598,357
Events in quadrant D3,445,664564,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142351
B0344521
C0133641
D0145401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63331111.752724%
B6333294046.423496%
C63341101.736659%
D63341241.957689%

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 7423 6334 34 34 0.46% 0.54%
B 7423 6334 2340 2340 31.52% 36.94%
C 7424 6335 50 50 0.67% 0.79%
D 7424 6335 74 74 1.00% 1.17%

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 3 14 325869 1871.42 702 684 173.8
A 10 251 176286 1010.58 702 684 173.8
A 13 254 12497 67.98 702 684 173.8
B 5 185 3377462 28149.19 555 534 120.0
B 4 206 3126427 26056.63 555 534 120.0
B 2 249 1106926 9222.59 555 534 120.0
C 15 208 107212 574.16 671 662 185.6
C 7 2 54822 291.85 671 662 185.6
C 14 254 41608 220.64 671 662 185.6
D 2 249 202907 1046.12 683 652 193.3
D 10 199 163146 840.47 683 652 193.3
D 2 31 75478 387.02 683 652 193.3

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