ASTROSAT CZTI

Data Quality Report

Orbit 20250605_A13_037T01_9000006476_level2

Creation date: 2025-07-17T02:24:53.237745
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_037T01_9000006476cztM0_level2.fits modeM0/AS1A13_037T01_9000006476cztM0_level2_quad_clean.evt
Size (bytes)5,241,568,3201,236,608,640
Size4.9 GB 1.2 GB
Events in quadrant A41,893,6462,826,932
Events in quadrant B40,591,0772,502,487
Events in quadrant C33,231,8141,942,033
Events in quadrant D13,601,620911,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04770
B04780
C04800
D04780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09918950
B012935370
C019112400
D028127960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085750
B086320
C086470
D086510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A427539124382.909208%
B427229399889.359852%
C42638111879127.860294%
D42700928733667.290385%

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 535152 428652 0 0 0.00% 0.00%
B 535152 428093 0 0 0.00% 0.00%
C 535152 423955 0 0 0.00% 0.00%
D 535152 401302 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 30714 7.17 11157 10633 2800.3
A 9 255 27780 6.12 11157 10633 2800.3
A 14 204 26001 5.49 11157 10633 2800.3
B 2 9 29179 7.77 10936 10558 2397.5
B 2 8 25221 6.12 10936 10558 2397.5
B 5 63 23610 5.44 10936 10558 2397.5
C 6 179 23857 6.11 9036 8686 2483.4
C -1 -1 -1 -1.0 9036 8686 2483.4
C -1 -1 -1 -1.0 9036 8686 2483.4
D 6 218 11217 6.77 3961 3631 1121.0
D 6 91 9788 5.49 3961 3631 1121.0
D 6 232 9566 5.29 3961 3631 1121.0

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