ASTROSAT CZTI

Data Quality Report

Orbit 51025

Creation date: 2025-03-05T06:50:31.817077
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/AS1C07_001T02_9000006452_51025cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51025cztM0_level2_quad_clean.evt
Size (bytes)540,668,160100,802,880
Size515.6 MB 96.1 MB
Events in quadrant A4,778,110657,719
Events in quadrant B5,238,359666,846
Events in quadrant C3,882,259647,414
Events in quadrant D5,551,346574,347

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191162
B0208162
C0169462
D0217402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72622383.277334%
B72626338.716607%
C72621652.272101%
D72625918.138254%

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 8622 7264 162 162 1.88% 2.23%
B 8622 7264 351 351 4.07% 4.83%
C 8622 7264 101 101 1.17% 1.39%
D 8622 7264 493 493 5.72% 6.79%

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 12 3 506268 2731.5 744 726 185.1
A 4 249 196232 1056.34 744 726 185.1
A 3 114 186772 1005.23 744 726 185.1
B 4 81 921331 5882.79 732 705 156.5
B 12 32 366925 2340.14 732 705 156.5
B 0 172 227444 1448.86 732 705 156.5
C 1 44 354037 1714.48 741 731 206.1
C 13 49 164081 792.68 741 731 206.1
C 3 233 59876 287.01 741 731 206.1
D 8 176 1215006 6124.52 708 683 198.3
D 2 216 720953 3632.73 708 683 198.3
D 2 249 197272 991.51 708 683 198.3

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