ASTROSAT CZTI

Data Quality Report

Orbit 20161004_G06_168T23_9000000706_level2

Creation date: 2025-11-06T20:25:43.020445
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/AS1G06_168T23_9000000706cztM0_level2.fits modeM0/AS1G06_168T23_9000000706cztM0_level2_quad_clean.evt
Size (bytes)245,577,600254,502,720
Size234.2 MB 242.7 MB
Events in quadrant A1,478,9141,577,193
Events in quadrant B1,365,3481,407,961
Events in quadrant C1,428,6901,450,094
Events in quadrant D1,249,6061,358,320

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0582330
B0804490
C0664610
D0657430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05620
B05640
C05640
D05640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A278394231.519451%
B2781721947.887263%
C278387672.755227%
D278327172.576171%

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 29565 27852 0 0 0.00% 0.00%
B 29565 27847 0 0 0.00% 0.00%
C 29565 27852 0 0 0.00% 0.00%
D 29565 27848 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 1444 10.69 383 354 102.0
A 7 110 1294 9.22 383 354 102.0
A 0 30 1130 7.61 383 354 102.0
B 2 9 1243 11.82 360 340 76.4
B 12 226 991 8.52 360 340 76.4
B 14 254 958 8.09 360 340 76.4
C 2 191 1009 6.47 377 346 102.4
C 12 241 969 6.08 377 346 102.4
C 3 30 959 5.99 377 346 102.4
D 7 3 956 6.4 356 323 98.9
D 1 3 939 6.23 356 323 98.9
D 6 231 937 6.21 356 323 98.9

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