ASTROSAT CZTI

Data Quality Report

Orbit 22975

Creation date: 2024-06-27T18:48:13.942911
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/AS1A07_062T01_9000003392_22975cztM0_level2.evt modeM0/AS1A07_062T01_9000003392_22975cztM0_level2_quad_clean.evt
Size (bytes)572,794,560107,038,080
Size546.3 MB 102.1 MB
Events in quadrant A3,994,546681,149
Events in quadrant B4,087,654683,526
Events in quadrant C4,197,939652,098
Events in quadrant D4,499,478644,090

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172263
B0174203
C0177953
D0189843

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83641832.187948%
B83652172.594142%
C83652773.311417%
D83651862.223551%

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 9449 8367 0 0 0.00% 0.00%
B 9450 8368 0 0 0.00% 0.00%
C 9450 8368 7 7 0.07% 0.08%
D 9450 8368 52 52 0.55% 0.62%

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 13 170 27921 129.33 1027 1001 208.1
A 13 254 13657 60.8 1027 1001 208.1
A 3 137 9027 38.56 1027 1001 208.1
B 0 190 33554 164.78 1025 998 197.6
B 12 111 24085 116.86 1025 998 197.6
B 11 111 21457 103.55 1025 998 197.6
C 14 238 155059 667.74 984 990 230.7
C 0 10 142862 614.88 984 990 230.7
C 0 239 31811 133.58 984 990 230.7
D 1 52 212588 860.74 1003 971 245.9
D 12 233 167673 678.05 1003 971 245.9
D 13 153 108676 438.08 1003 971 245.9

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