ASTROSAT CZTI

Data Quality Report

Orbit 13884

Creation date: 2024-06-27T16:47:20.483972
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/AS1A04_010T01_9000002046_13884cztM0_level2.evt modeM0/AS1A04_010T01_9000002046_13884cztM0_level2_quad_clean.evt
Size (bytes)531,046,08090,253,440
Size506.4 MB 86.1 MB
Events in quadrant A3,721,575559,306
Events in quadrant B3,740,280564,026
Events in quadrant C3,615,482559,422
Events in quadrant D4,504,730536,809

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158613
B0158602
C0153692
D0183872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7377811.098007%
B73771321.789345%
C7377420.569337%
D7377821.111563%

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 8783 7379 13 13 0.15% 0.18%
B 8783 7379 22 22 0.25% 0.30%
C 8783 7380 0 0 0.00% 0.00%
D 8783 7378 29 29 0.33% 0.39%

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 23 198709 1087.52 894 872 181.9
A 8 15 25401 134.84 894 872 181.9
A 4 2 20874 109.95 894 872 181.9
B 0 219 88818 507.49 892 867 173.3
B 0 214 66088 376.33 892 867 173.3
B 4 80 40229 227.12 892 867 173.3
C 3 233 211424 1026.57 872 877 205.1
C 12 4 7472 32.16 872 877 205.1
C 13 61 6303 26.46 872 877 205.1
D 1 52 571085 2775.13 860 839 205.5
D 5 222 216830 1051.13 860 839 205.5
D 12 110 136006 657.8 860 839 205.5

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