ASTROSAT CZTI

Data Quality Report

Orbit 20201204_A10_045T03_9000004052_level2

Creation date: 2021-01-07T02:29:09.073888
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_045T03_9000004052cztM0_level2_bc.evt modeM0/AS1A10_045T03_9000004052cztM0_level2_quad_clean.evt
Size (bytes)1,684,532,160521,092,800
Size1.6 GB 497.0 MB
Events in quadrant A7,948,7503,425,525
Events in quadrant B7,982,9483,441,783
Events in quadrant C8,763,0703,284,096
Events in quadrant D23,794,8683,087,660

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07580
B07600
C07620
D07580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0768490
B0773930
C0812030
D01291940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0580
C0580
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A370982730.735889%
B369744181.130524%
C370976831.841119%
D36973435311.773456%

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 41668 36636 0 0 0.00% 0.00%
B 41668 36619 0 0 0.00% 0.00%
C 41668 36643 0 0 0.00% 0.00%
D 41668 36620 1667 1667 4.00% 4.55%

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 247766 566.5 1986 1956 433.9
A 13 254 58650 130.66 1986 1956 433.9
A 1 113 22063 46.34 1986 1956 433.9
B 10 245 130069 339.95 1974 1926 377.0
B 4 200 71528 184.64 1974 1926 377.0
B 4 52 63917 164.45 1974 1926 377.0
C 3 233 1269013 2857.03 1882 1874 443.5
C 15 208 177786 396.63 1882 1874 443.5
C 8 222 49242 106.8 1882 1874 443.5
D 8 195 7501150 17592.33 1840 1786 426.3
D 1 52 4474412 10492.08 1840 1786 426.3
D 7 223 1889348 4427.92 1840 1786 426.3

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