ASTROSAT CZTI

Data Quality Report

Orbit 18223

Creation date: 2024-06-27T17:46:59.689085
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/AS1C04_001T01_9000002716_18223cztM0_level2.evt modeM0/AS1C04_001T01_9000002716_18223cztM0_level2_quad_clean.evt
Size (bytes)497,839,680133,375,680
Size474.8 MB 127.2 MB
Events in quadrant A4,338,000905,995
Events in quadrant B3,191,814946,644
Events in quadrant C3,031,962882,726
Events in quadrant D4,090,140867,135

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167392
B0132332
C0128752
D0162192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62624457.106356%
B6262350.558927%
C6262350.558927%
D62621602.555094%

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 7642 6262 296 296 3.87% 4.73%
B 7642 6262 5 5 0.07% 0.08%
C 7642 6262 0 0 0.00% 0.00%
D 7642 6263 147 147 1.92% 2.35%

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 15 174 1335749 8652.39 780 766 154.3
A 0 226 7025 40.57 780 766 154.3
A 12 194 5795 32.59 780 766 154.3
B 7 220 42437 283.4 792 773 147.0
B 0 197 26783 176.92 792 773 147.0
B 0 189 19198 125.33 792 773 147.0
C 14 238 120123 699.27 746 751 170.7
C 13 61 5378 27.1 746 751 170.7
C 3 233 2256 8.82 746 751 170.7
D 1 52 1031423 5662.54 762 739 182.0
D 7 238 66264 359.99 762 739 182.0
D 14 34 45321 244.93 762 739 182.0

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