ASTROSAT CZTI

Data Quality Report

Orbit 59011

Creation date: 2026-08-24T18:18:58.568237
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_59011cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59011cztM0_level2_quad_clean.evt
Size (bytes)961,441,92083,632,320
Size916.9 MB 79.8 MB
Events in quadrant A5,143,731684,512
Events in quadrant B6,295,205689,628
Events in quadrant C17,584,28139,313
Events in quadrant D5,998,449608,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201710
B0236954
C0569710
D0227560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73274506.141668%
B732692012.558013%
C7326699195.427245%
D73264696.401856%

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 7327 7327 270 270 3.69% 3.69%
B 7325 7325 684 684 9.34% 9.34%
C 7325 7325 6904 6904 94.25% 94.25%
D 7326 7326 457 457 6.24% 6.24%

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 1126423 5628.02 811 790 200.0
A 10 251 773270 3862.3 811 790 200.0
A 12 18 24902 120.56 811 790 200.0
B 2 249 1748432 10496.51 772 742 166.5
B 8 234 598537 3590.32 772 742 166.5
B 4 236 321597 1927.03 772 742 166.5
C 15 219 15880167 172207.01 332 328 92.2
C 12 252 195817 2119.96 332 328 92.2
C 6 13 72225 779.68 332 328 92.2
D 12 110 2267052 10248.31 782 748 221.1
D 11 129 224122 1010.11 782 748 221.1
D 8 160 118520 532.57 782 748 221.1

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