ASTROSAT CZTI

Data Quality Report

Orbit 17894

Creation date: 2024-06-27T17:42:17.938292
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/AS1T03_075T01_9000002660_17894cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17894cztM0_level2_quad_clean.evt
Size (bytes)543,553,920106,695,360
Size518.4 MB 101.8 MB
Events in quadrant A3,798,612671,866
Events in quadrant B3,957,953688,802
Events in quadrant C4,098,120664,090
Events in quadrant D4,060,406646,970

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168362
B0171392
C0175262
D0177762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80421291.604079%
B80431892.349869%
C80431992.474201%
D8043981.218451%

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 9202 8044 0 0 0.00% 0.00%
B 9203 8045 1 1 0.01% 0.01%
C 9203 8045 0 0 0.00% 0.00%
D 9203 8045 15 15 0.16% 0.19%

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 0 226 8455 37.11 987 966 201.8
A 3 137 7832 34.02 987 966 201.8
A 12 194 7015 29.97 987 966 201.8
B 15 222 25839 128.86 990 966 193.0
B 12 111 23550 117.0 990 966 193.0
B 11 111 20634 101.89 990 966 193.0
C 3 233 238181 1048.03 952 957 226.4
C 14 238 146861 644.59 952 957 226.4
C 13 61 6720 25.46 952 957 226.4
D 12 110 101183 425.0 958 930 235.9
D 13 168 84159 352.83 958 930 235.9
D 1 52 62802 262.3 958 930 235.9

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