ASTROSAT CZTI

Data Quality Report

Orbit 22820

Creation date: 2024-06-27T18:46:12.778120
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/AS1C05_012T02_9000003372_22820cztM0_level2.evt modeM0/AS1C05_012T02_9000003372_22820cztM0_level2_quad_clean.evt
Size (bytes)1,429,554,240267,266,880
Size1.3 GB 254.9 MB
Events in quadrant A8,252,1301,758,855
Events in quadrant B8,492,8241,773,899
Events in quadrant C8,589,3301,700,687
Events in quadrant D16,733,6001,609,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367713
B0373033
C0376023
D0620143

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18163510.280791%
B181631090.600121%
C181632201.211254%
D1816417799.794098%

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 19958 18166 0 0 0.00% 0.00%
B 19958 18166 14 14 0.07% 0.08%
C 19958 18166 3 3 0.02% 0.02%
D 19959 18167 1418 1418 7.10% 7.81%

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 13 254 32324 70.71 2137 2091 427.5
A 3 137 18741 38.94 2137 2091 427.5
A 0 226 18309 37.93 2137 2091 427.5
B 0 229 66326 161.39 2119 2066 398.2
B 12 111 49673 119.56 2119 2066 398.2
B 11 111 44214 105.85 2119 2066 398.2
C 14 238 324636 679.52 2049 2059 474.7
C 0 239 154797 321.75 2049 2059 474.7
C 2 16 119743 247.9 2049 2059 474.7
D 7 238 7085068 14478.45 2024 1965 489.2
D 1 52 1565572 3196.14 2024 1965 489.2
D 10 230 132482 266.79 2024 1965 489.2

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