ASTROSAT CZTI

Data Quality Report

Orbit 53090

Creation date: 2025-07-23T12:41:16.347100
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/AS1C09_011T07_9000006488_53090cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53090cztM0_level2_quad_clean.evt
Size (bytes)873,322,56076,587,840
Size832.9 MB 73.0 MB
Events in quadrant A12,072,270352,109
Events in quadrant B3,500,003664,329
Events in quadrant C9,676,404402,362
Events in quadrant D6,572,343443,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403772
B0152552
C0333012
D0243272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6551311347.519463%
B6551991.511220%
C6551243437.154633%
D6551157824.087926%

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 7616 6551 2902 2902 38.10% 44.30%
B 7616 6552 47 47 0.62% 0.72%
C 7616 6552 2219 2219 29.14% 33.87%
D 7616 6552 1081 1081 14.19% 16.50%

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 9 191 8940153 68824.22 518 507 129.9
A 6 248 396847 3051.33 518 507 129.9
A 0 8 264169 2029.87 518 507 129.9
B 2 249 289401 2020.56 672 649 142.9
B 4 81 127829 889.95 672 649 142.9
B 0 213 92198 640.62 672 649 142.9
C 1 241 4562193 29786.62 543 535 153.1
C 15 224 2581348 16852.14 543 535 153.1
C 13 3 84267 546.75 543 535 153.1
D 12 17 3634725 22392.47 562 535 162.3
D 2 153 124186 761.89 562 535 162.3
D 3 224 87603 536.48 562 535 162.3

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