ASTROSAT CZTI

Data Quality Report

Orbit 19815

Creation date: 2024-06-27T18:07:25.959765
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/AS1C04_009T06_9000002960_19815cztM0_level2.evt modeM0/AS1C04_009T06_9000002960_19815cztM0_level2_quad_clean.evt
Size (bytes)658,788,480127,402,560
Size628.3 MB 121.5 MB
Events in quadrant A4,610,906827,976
Events in quadrant B3,552,547922,911
Events in quadrant C3,188,834911,608
Events in quadrant D8,181,037763,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178042
B0146422
C0135742
D0285072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A618079412.847896%
B61801712.766990%
C61801312.119741%
D6180179629.061489%

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 7520 6181 573 573 7.62% 9.27%
B 7520 6180 53 53 0.70% 0.86%
C 7520 6180 1 1 0.01% 0.02%
D 7520 6180 1667 1667 22.17% 26.97%

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 14 238 1408630 9647.94 725 710 145.9
A 14 254 274335 1875.05 725 710 145.9
A 5 16 88104 598.88 725 710 145.9
B 5 172 109893 758.01 787 767 144.0
B 10 245 84497 581.6 787 767 144.0
B 0 190 50836 347.79 787 767 144.0
C 14 238 122257 681.74 775 783 178.2
C 3 233 18985 102.15 775 783 178.2
C 5 112 13900 73.62 775 783 178.2
D 12 33 2718627 16108.29 698 679 168.7
D 7 38 1136621 6732.31 698 679 168.7
D 1 52 759288 4496.0 698 679 168.7

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