ASTROSAT CZTI

Data Quality Report

Orbit 01274

Creation date: 2024-06-27T14:10:12.646681
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/AS1G04_011T02_9000000226_01274cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01274cztM0_level2_quad_clean.evt
Size (bytes)1,178,409,60090,060,480
Size1.1 GB 85.9 MB
Events in quadrant A6,670,382611,807
Events in quadrant B7,909,778614,145
Events in quadrant C7,117,418602,746
Events in quadrant D13,618,964502,908

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238532
B0275091
C0251391
D0446511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A565160.106176%
B56511081.911166%
C565170.123872%
D5651169830.047779%

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 6941 5651 139 139 2.00% 2.46%
B 6941 5652 527 527 7.59% 9.32%
C 6941 5652 235 235 3.39% 4.16%
D 6940 5650 4067 4067 58.60% 71.98%

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 12 243 14781 31.78 1731 1739 410.3
A 15 127 9854 19.78 1731 1739 410.3
A 11 79 8084 15.46 1731 1739 410.3
B 8 4 569411 1343.0 1805 1811 422.6
B 6 53 238850 560.86 1805 1811 422.6
B 12 52 163986 383.72 1805 1811 422.6
C 15 241 266916 576.67 1673 1732 459.9
C 8 208 234975 507.21 1673 1732 459.9
C 3 79 32580 67.08 1673 1732 459.9
D 13 169 5958809 13056.0 1494 1546 456.3
D 12 22 1253919 2744.71 1494 1546 456.3
D 10 84 571432 1248.97 1494 1546 456.3

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