ASTROSAT CZTI

Data Quality Report

Orbit 19149

Creation date: 2024-06-27T17:59:33.024968
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/AS1A05_046T01_9000002838_19149cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19149cztM0_level2_quad_clean.evt
Size (bytes)476,763,840103,524,480
Size454.7 MB 98.7 MB
Events in quadrant A3,133,357677,216
Events in quadrant B3,440,133705,091
Events in quadrant C3,243,664679,263
Events in quadrant D4,205,801645,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131342
B0140522
C0133802
D0163202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6124280.457218%
B61231171.910828%
C6123621.012576%
D61231652.694757%

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 7459 6125 0 0 0.00% 0.00%
B 7458 6124 20 20 0.27% 0.33%
C 7458 6124 0 0 0.00% 0.00%
D 7458 6124 179 179 2.40% 2.92%

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 11 29 7958 44.34 811 795 161.5
A 0 226 7143 39.3 811 795 161.5
A 13 254 6545 35.59 811 795 161.5
B 6 36 95076 612.79 819 800 153.8
B 7 220 85528 550.73 819 800 153.8
B 12 111 17409 107.96 819 800 153.8
C 14 238 123950 664.3 794 804 185.4
C 3 233 22105 114.91 794 804 185.4
C 13 61 5468 25.16 794 804 185.4
D 1 52 1228197 6487.13 788 770 189.2
D 2 234 25147 128.84 788 770 189.2
D 14 226 8042 38.43 788 770 189.2

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