ASTROSAT CZTI

Data Quality Report

Orbit 20170917_G07_076T01_9000001538_level2

Creation date: 2025-11-17T04:30:46.304671
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_076T01_9000001538cztM0_level2.fits modeM0/AS1G07_076T01_9000001538cztM0_level2_quad_clean.evt
Size (bytes)150,920,640126,285,120
Size143.9 MB 120.4 MB
Events in quadrant A878,942672,186
Events in quadrant B856,764680,561
Events in quadrant C889,922675,489
Events in quadrant D767,904618,862

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387740
B0431440
C0359810
D0425190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03440
C03440
D03460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170587174.203306%
B170589725.698206%
C170502911.706745%
D170582961.735256%

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 17483 17059 0 0 0.00% 0.00%
B 17483 17072 0 0 0.00% 0.00%
C 17483 17078 0 0 0.00% 0.00%
D 17483 17063 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 14 188 870 10.83 228 212 60.8
A 0 29 837 10.29 228 212 60.8
A 14 204 741 8.71 228 212 60.8
B 2 9 759 11.51 225 214 47.3
B 3 17 586 7.86 225 214 47.3
B 14 254 584 7.82 225 214 47.3
C 12 241 662 7.11 235 218 62.4
C 2 191 619 6.42 235 218 62.4
C 3 158 599 6.1 235 218 62.4
D 3 14 602 6.61 219 198 61.1
D 3 31 596 6.51 219 198 61.1
D 6 231 554 5.83 219 198 61.1

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