ASTROSAT CZTI

Data Quality Report

Orbit 48261

Creation date: 2024-09-05T21:28:43.653059
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/AS1A13_029T01_9000006422_48261cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48261cztM0_level2_quad_clean.evt
Size (bytes)532,656,000114,177,600
Size508.0 MB 108.9 MB
Events in quadrant A7,717,255735,146
Events in quadrant B3,671,576784,671
Events in quadrant C3,771,112746,485
Events in quadrant D4,000,339690,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277805
B0158472
C0164132
D0170472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71785537.704096%
B71782473.441070%
C71782293.190304%
D71782092.911675%

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 7723 7178 15 15 0.19% 0.21%
B 7723 7178 19 19 0.25% 0.26%
C 7723 7178 108 108 1.40% 1.50%
D 7723 7178 99 99 1.28% 1.38%

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 10 83 4502400 25973.4 822 803 173.3
A 3 14 18045 99.48 822 803 173.3
A 13 254 14593 79.57 822 803 173.3
B 4 21 191383 1138.2 834 807 167.4
B 0 200 49386 290.13 834 807 167.4
B 0 186 28472 165.23 834 807 167.4
C 12 2 515906 2648.27 817 818 194.5
C 14 254 51152 258.79 817 818 194.5
C 0 207 13045 62.86 817 818 194.5
D 2 165 164025 780.26 824 796 209.2
D 2 249 156926 746.32 824 796 209.2
D 12 221 139539 663.21 824 796 209.2

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