ASTROSAT CZTI

Data Quality Report

Orbit 25735

Creation date: 2024-06-27T19:20:54.904206
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_008T06_9000003748_25735cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25735cztM0_level2_quad_clean.evt
Size (bytes)539,023,68088,018,560
Size514.1 MB 83.9 MB
Events in quadrant A3,456,670565,219
Events in quadrant B3,669,116579,824
Events in quadrant C3,573,397560,615
Events in quadrant D5,211,127532,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143590
B0150020
C0146740
D0196870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6111500.818197%
B6111610.998200%
C61111111.816397%
D61114256.954672%

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 7486 6111 1 1 0.01% 0.02%
B 7486 6112 5 5 0.07% 0.08%
C 7486 6111 1 1 0.01% 0.02%
D 7486 6111 309 309 4.13% 5.06%

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 18145 98.56 889 876 175.2
A 13 254 9422 48.77 889 876 175.2
A 5 168 9134 47.13 889 876 175.2
B 4 171 79078 480.0 892 876 162.9
B 0 190 26648 158.19 892 876 162.9
B 3 112 25634 151.96 892 876 162.9
C 14 238 142124 700.8 873 885 201.5
C 3 233 30278 145.84 873 885 201.5
C 13 61 5983 25.3 873 885 201.5
D 1 52 951735 4528.4 859 837 210.0
D 7 80 588012 2796.26 859 837 210.0
D 7 238 158460 750.64 859 837 210.0

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