ASTROSAT CZTI

Data Quality Report

Orbit 25952

Creation date: 2024-06-27T19:23:11.838469
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_068T01_9000003760_25952cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25952cztM0_level2_quad_clean.evt
Size (bytes)496,630,080123,336,000
Size473.6 MB 117.6 MB
Events in quadrant A3,584,562848,660
Events in quadrant B3,477,157845,510
Events in quadrant C3,507,953794,777
Events in quadrant D4,038,916802,635

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149220
B0144840
C0147210
D0162740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63621131.776171%
B63621101.729016%
C63621592.499214%
D63611402.200912%

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 7602 6362 0 0 0.00% 0.00%
B 7602 6362 0 0 0.00% 0.00%
C 7602 6362 0 0 0.00% 0.00%
D 7601 6361 49 49 0.64% 0.77%

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 40236 216.96 915 899 181.3
A 12 16 19339 101.7 915 899 181.3
A 13 254 9584 47.9 915 899 181.3
B 12 111 19301 111.29 884 865 165.7
B 11 111 17742 101.88 884 865 165.7
B 0 190 16520 94.5 884 865 165.7
C 14 238 140203 714.95 851 857 194.9
C 3 233 33380 166.87 851 857 194.9
C 15 127 5723 24.97 851 857 194.9
D 1 52 612798 2945.46 881 864 207.8
D 12 1 42050 198.24 881 864 207.8
D 2 234 23956 111.15 881 864 207.8

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