ASTROSAT CZTI

Data Quality Report

Orbit 20160617_G05_167T01_9000000500_level2

Creation date: 2025-11-03T15:02:03.789316
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/AS1G05_167T01_9000000500cztM0_level2.fits modeM0/AS1G05_167T01_9000000500cztM0_level2_quad_clean.evt
Size (bytes)115,966,080153,247,680
Size110.6 MB 146.1 MB
Events in quadrant A694,862993,252
Events in quadrant B636,038925,262
Events in quadrant C690,436949,264
Events in quadrant D593,594876,537

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288990
B0443700
C0271300
D0285740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129741511.163866%
B12973147611.377476%
C12974930.716818%
D129741451.117620%

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 15124 12972 0 0 0.00% 0.00%
B 15123 12972 0 0 0.00% 0.00%
C 15123 12972 0 0 0.00% 0.00%
D 15124 12972 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 29 705 10.82 180 169 49.5
A 14 188 704 10.8 180 169 49.5
A 14 204 682 10.36 180 169 49.5
B 2 9 519 10.05 167 159 35.8
B 12 226 511 9.82 167 159 35.8
B 14 254 471 8.71 167 159 35.8
C 1 81 539 7.17 182 169 51.6
C 1 80 524 6.88 182 169 51.6
C 12 241 487 6.16 182 169 51.6
D 11 82 557 8.59 168 153 47.0
D 7 3 462 6.57 168 153 47.0
D 3 14 457 6.46 168 153 47.0

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