ASTROSAT CZTI

Data Quality Report

Orbit 35722

Creation date: 2022-05-10T12:49:46.485110
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/AS1A09_143T04_9000005120_35722cztM0_level2.evt modeM0/AS1A09_143T04_9000005120_35722cztM0_level2_quad_clean.evt
Size (bytes)454,011,84099,408,960
Size433.0 MB 94.8 MB
Events in quadrant A2,779,764672,149
Events in quadrant B3,000,823673,585
Events in quadrant C3,568,309649,285
Events in quadrant D4,021,221624,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117693
B0124612
C0140072
D0155532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559560.107239%
B5595931.662198%
C55951512.698838%
D5595661.179625%

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 7328 5596 0 0 0.00% 0.00%
B 7328 5596 57 57 0.78% 1.02%
C 7328 5596 139 139 1.90% 2.48%
D 7328 5596 41 41 0.56% 0.73%

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 160731 1214.22 661 649 131.8
A 7 48 29266 217.06 661 649 131.8
A 13 6 20440 150.11 661 649 131.8
B 5 172 263692 2112.69 649 631 124.5
B 5 255 64859 515.83 649 631 124.5
B 0 197 49953 396.11 649 631 124.5
C 0 207 412196 2845.7 630 634 144.6
C 1 23 271511 1872.95 630 634 144.6
C 15 214 236774 1632.77 630 634 144.6
D 10 203 1179185 7457.2 640 621 158.0
D 13 249 152343 960.0 640 621 158.0
D 2 153 87404 549.11 640 621 158.0

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