ASTROSAT CZTI

Data Quality Report

Orbit 20170911_G07_046T01_9000001534_level2

Creation date: 2025-11-17T01:45:13.968644
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/AS1G07_046T01_9000001534cztM0_level2.fits modeM0/AS1G07_046T01_9000001534cztM0_level2_quad_clean.evt
Size (bytes)400,743,360292,196,160
Size382.2 MB 278.7 MB
Events in quadrant A2,447,4261,578,088
Events in quadrant B2,306,9501,508,568
Events in quadrant C2,413,9101,504,519
Events in quadrant D2,062,6541,351,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08580
B08580
C08580
D08580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0887360
B01181410
C0868820
D01080860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A423263460.817464%
B4232631737.496574%
C423261850.437084%
D423264110.971034%

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 56313 42326 0 0 0.00% 0.00%
B 56313 42321 0 0 0.00% 0.00%
C 56313 42326 0 0 0.00% 0.00%
D 56313 42325 0 0 0.00% 0.00%

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 0 29 2402 11.18 636 594 161.7
A 7 110 2016 8.8 636 594 161.7
A 9 19 1814 7.55 636 594 161.7
B 2 9 2073 12.24 607 579 122.0
B 3 17 1552 7.97 607 579 122.0
B 5 128 1526 7.76 607 579 122.0
C 1 80 1805 7.21 637 593 168.2
C 1 81 1746 6.86 637 593 168.2
C 12 241 1662 6.36 637 593 168.2
D 6 231 1516 6.2 587 533 158.6
D 7 3 1505 6.13 587 533 158.6
D 7 5 1476 5.94 587 533 158.6

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