ASTROSAT CZTI

Data Quality Report

Orbit 15799

Creation date: 2024-06-27T17:13:41.230925
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/AS1T02_058T01_9000002338_15799cztM0_level2.evt modeM0/AS1T02_058T01_9000002338_15799cztM0_level2_quad_clean.evt
Size (bytes)408,939,84078,189,120
Size390.0 MB 74.6 MB
Events in quadrant A3,214,068494,292
Events in quadrant B3,144,318500,923
Events in quadrant C2,938,787473,934
Events in quadrant D2,690,434491,193

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013614
B013620
C013620
D01368

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150371827
B0146031811
C0143442159
D0136341678

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58322454.200960%
B5832911.560357%
C5749891.548095%
D5851570.974192%

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 7225 6253 128 128 1.77% 2.05%
B 7225 6266 9 9 0.12% 0.14%
C 7225 6185 0 0 0.00% 0.00%
D 7225 6274 1 1 0.01% 0.02%

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 15 239 478344 3277.62 705 690 145.7
A 14 254 24478 163.23 705 690 145.7
A 0 226 6235 38.05 705 690 145.7
B 10 245 148126 1041.79 715 697 141.5
B 7 220 59622 416.39 715 697 141.5
B 3 209 30974 213.95 715 697 141.5
C 7 247 183760 1140.81 677 684 160.5
C 14 238 103003 637.59 677 684 160.5
C 10 22 12406 73.04 677 684 160.5
D 2 234 26673 138.44 690 675 187.8
D 12 221 18012 92.32 690 675 187.8
D 2 152 13001 65.64 690 675 187.8

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