ASTROSAT CZTI

Data Quality Report

Orbit 26625

Creation date: 2024-06-27T19:31:09.038880
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/AS1A09_145T01_9000003848_26625cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26625cztM0_level2_quad_clean.evt
Size (bytes)657,400,320105,854,400
Size626.9 MB 101.0 MB
Events in quadrant A3,628,905709,240
Events in quadrant B4,336,786710,749
Events in quadrant C3,665,816684,783
Events in quadrant D7,787,593596,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152960
B0176060
C0153100
D0281290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7242370.510909%
B7243971.339224%
C72421011.394642%
D7242163422.562828%

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 7682 7243 4 4 0.05% 0.06%
B 7683 7244 14 14 0.18% 0.19%
C 7682 7243 6 6 0.08% 0.08%
D 7682 7243 1391 1391 18.11% 19.20%

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 0 13 104597 563.56 907 890 184.0
A 5 168 16550 85.1 907 890 184.0
A 13 254 12578 63.51 907 890 184.0
B 0 189 661580 3838.18 901 881 172.1
B 5 172 93633 538.82 901 881 172.1
B 0 244 20884 116.2 901 881 172.1
C 14 238 139124 665.27 870 877 207.8
C 3 233 86992 414.4 870 877 207.8
C 15 208 39044 183.67 870 877 207.8
D 1 52 2799172 14721.58 772 752 190.1
D 7 80 1500008 7887.1 772 752 190.1
D 2 250 502702 2640.6 772 752 190.1

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