ASTROSAT CZTI

Data Quality Report

Orbit 34355

Creation date: 2022-02-04T10:34:58.318984
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/AS1A05_019T01_9000004906_34355cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34355cztM0_level2_quad_clean.evt
Size (bytes)773,573,76060,364,800
Size737.7 MB 57.6 MB
Events in quadrant A2,823,443400,583
Events in quadrant B3,738,609399,154
Events in quadrant C3,596,220394,288
Events in quadrant D12,857,595206,951

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124093
B0151152
C0144152
D0421762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6095150.246103%
B60951923.150123%
C6095701.148482%
D6095392364.364233%

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 8781 6097 8 8 0.09% 0.13%
B 8781 6097 137 137 1.56% 2.25%
C 8781 6097 47 47 0.54% 0.77%
D 8781 6096 3668 3668 41.77% 60.17%

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 9 143 52893 366.84 707 690 142.3
A 10 83 31936 219.57 707 690 142.3
A 13 254 10080 65.99 707 690 142.3
B 5 172 420297 3135.92 696 679 133.8
B 5 200 299265 2231.42 696 679 133.8
B 0 190 163112 1213.91 696 679 133.8
C 15 214 257459 1596.24 690 693 160.9
C 3 233 256620 1591.02 690 693 160.9
C 14 254 177708 1100.45 690 693 160.9
D 7 223 9235215 88614.74 414 401 104.2
D 8 195 1204848 11557.54 414 401 104.2
D 12 235 529671 5078.73 414 401 104.2

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