ASTROSAT CZTI

Data Quality Report

Orbit 11820

Creation date: 2024-06-27T16:18:43.499773
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/AS1A04_022T07_9000001748_11820cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11820cztM0_level2_quad_clean.evt
Size (bytes)566,976,96093,611,520
Size540.7 MB 89.3 MB
Events in quadrant A3,369,445603,215
Events in quadrant B5,632,483572,829
Events in quadrant C3,062,757609,273
Events in quadrant D4,647,831577,750

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145443
B0213022
C0138132
D0184582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6763711.049830%
B67636489.581547%
C6763350.517522%
D67631802.661541%

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 7704 6765 0 0 0.00% 0.00%
B 7704 6765 405 405 5.26% 5.99%
C 7704 6765 0 0 0.00% 0.00%
D 7704 6765 117 117 1.52% 1.73%

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 1 162 120116 738.25 794 776 161.7
A 1 178 61807 377.54 794 776 161.7
A 1 161 54498 332.33 794 776 161.7
B 10 16 1321315 8959.61 777 758 147.4
B 4 239 686348 4651.53 777 758 147.4
B 15 185 293644 1987.15 777 758 147.4
C 0 207 6160 29.27 782 785 183.7
C 13 61 5768 27.13 782 785 183.7
C 8 208 4922 22.53 782 785 183.7
D 13 122 881355 4665.83 774 752 188.7
D 1 52 176901 933.32 774 752 188.7
D 13 249 174402 920.07 774 752 188.7

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