ASTROSAT CZTI

Data Quality Report

Orbit 52161

Creation date: 2025-05-20T18:04:56.318128
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_011T08_9000006472_52161cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52161cztM0_level2_quad_clean.evt
Size (bytes)375,698,88028,013,760
Size358.3 MB 26.7 MB
Events in quadrant A1,880,180249,658
Events in quadrant B1,695,142263,684
Events in quadrant C4,429,932142,144
Events in quadrant D5,691,24730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075020
B068900
C0150260
D0187410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2688220.818452%
B2689662.454444%
C2689119844.551878%
D2689268899.962811%

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 2688 2688 15 15 0.56% 0.56%
B 2689 2689 60 60 2.23% 2.23%
C 2688 2688 1144 1144 42.56% 42.56%
D 2688 2688 1720 1720 63.99% 63.99%

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 4 3 342429 5012.12 271 264 68.3
A 4 95 253320 3706.83 271 264 68.3
A 14 254 51848 755.62 271 264 68.3
B 10 44 189748 3299.77 264 256 57.4
B 7 0 94518 1641.46 264 256 57.4
B 0 216 93681 1626.88 264 256 57.4
C 15 224 2140352 38019.53 200 198 56.3
C 0 192 960043 17051.51 200 198 56.3
C 13 3 230548 4092.14 200 198 56.3
D 12 1 4786283 662667.16 19 18 7.2
D 6 42 745945 103274.96 19 18 7.2
D 12 3 21370 2956.22 19 18 7.2

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