ASTROSAT CZTI

Data Quality Report

Orbit 20190722_A05_007T06_9000003050_level2

Creation date: 2021-08-29T03:31:22.061820
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/AS1A05_007T06_9000003050cztM0_level2_bc.evt modeM0/AS1A05_007T06_9000003050cztM0_level2_quad_clean.evt
Size (bytes)2,270,488,320858,553,920
Size2.1 GB 818.8 MB
Events in quadrant A12,695,5625,741,756
Events in quadrant B14,100,4525,668,836
Events in quadrant C13,276,3185,479,404
Events in quadrant D24,663,0205,063,360

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012000
B012020
C012000
D012040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01238080
B01296830
C01262470
D01748640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A590526081.029601%
B590689371.586307%
C590658661.466181%
D5906655209.345478%

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 68112 59105 4 4 0.01% 0.01%
B 68112 59124 16 16 0.02% 0.03%
C 68112 59135 1 1 0.00% 0.00%
D 68112 59113 839 839 1.23% 1.42%

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 5 16 459055 665.3 3158 3102 685.3
A 12 16 68093 94.83 3158 3102 685.3
A 12 194 32485 42.87 3158 3102 685.3
B 7 220 652717 1103.05 3128 3053 589.0
B 4 216 275414 462.44 3128 3053 589.0
B 0 197 244257 409.53 3128 3053 589.0
C 8 208 1473667 2044.71 3022 3007 719.3
C 7 247 91146 122.54 3022 3007 719.3
C 3 233 64562 85.58 3022 3007 719.3
D 1 52 7148062 10275.91 2962 2860 695.3
D 1 20 2568416 3689.67 2962 2860 695.3
D 12 227 1275941 1830.89 2962 2860 695.3

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