ASTROSAT CZTI

Data Quality Report

Orbit 35637

Creation date: 2022-05-02T14:39:10.937424
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/AS1A11_106T01_9000005102_35637cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35637cztM0_level2_quad_clean.evt
Size (bytes)754,896,96083,871,360
Size719.9 MB 80.0 MB
Events in quadrant A13,041,348257,910
Events in quadrant B3,150,009651,887
Events in quadrant C3,260,734646,501
Events in quadrant D3,064,585623,728

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422903
B0124522
C0129142
D0124142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51045104100.000000%
B51041152.253135%
C51041573.076019%
D5104360.705329%

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 7077 5105 5006 5006 70.74% 98.06%
B 7077 5105 102 102 1.44% 2.00%
C 7077 5105 116 116 1.64% 2.27%
D 7077 5105 42 42 0.59% 0.82%

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 15 169 11730146 183263.76 318 313 64.0
A 10 83 72015 1120.25 318 313 64.0
A 13 6 5112 74.98 318 313 64.0
B 5 172 601439 4979.77 636 619 120.7
B 0 189 42763 349.3 636 619 120.7
B 12 111 14660 116.38 636 619 120.7
C 0 10 562258 3844.94 635 641 146.1
C 15 214 212931 1453.38 635 641 146.1
C 13 61 4154 24.05 635 641 146.1
D 12 217 338529 2183.8 641 626 154.7
D 2 153 135036 868.67 641 626 154.7
D 2 249 42549 270.94 641 626 154.7

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