ASTROSAT CZTI

Data Quality Report

Orbit 37232

Creation date: 2024-06-27T21:37:13.581155
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/AS1A10_123T11_9000005286_37232cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37232cztM0_level2_quad_clean.evt
Size (bytes)430,983,36091,376,640
Size411.0 MB 87.1 MB
Events in quadrant A3,023,190627,110
Events in quadrant B3,019,279624,939
Events in quadrant C2,809,189597,128
Events in quadrant D3,864,886571,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120733
B0120642
C0110862
D0146832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4946661.334412%
B4946280.566114%
C4946701.415285%
D49462374.791751%

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 7067 4947 34 34 0.48% 0.69%
B 7067 4947 14 14 0.20% 0.28%
C 7067 4947 59 59 0.83% 1.19%
D 7067 4947 214 214 3.03% 4.33%

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 10 83 269043 2166.08 619 608 123.9
A 9 143 139953 1124.42 619 608 123.9
A 15 237 95499 765.7 619 608 123.9
B 0 190 182958 1601.54 606 591 113.9
B 0 213 108362 946.44 606 591 113.9
B 4 232 104572 913.16 606 591 113.9
C 15 214 210950 1564.72 584 591 134.4
C 0 10 181612 1346.5 584 591 134.4
C 14 254 65554 483.22 584 591 134.4
D 12 233 334718 2327.9 591 577 143.5
D 2 249 308710 2146.71 591 577 143.5
D 13 171 201125 1397.18 591 577 143.5

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