ASTROSAT CZTI

Data Quality Report

Orbit 20160727_G05_173T01_9000000564_level2

Creation date: 2025-11-04T11:35:21.214703
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_173T01_9000000564cztM0_level2.fits modeM0/AS1G05_173T01_9000000564cztM0_level2_quad_clean.evt
Size (bytes)101,603,52081,279,360
Size96.9 MB 77.5 MB
Events in quadrant A598,458434,606
Events in quadrant B586,794442,861
Events in quadrant C599,402420,256
Events in quadrant D516,798386,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240210
B0230800
C0231190
D0245500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112101010.900981%
B11209720.642341%
C11210600.535236%
D112101601.427297%

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 13320 11215 0 0 0.00% 0.00%
B 13320 11215 0 0 0.00% 0.00%
C 13320 11214 0 0 0.00% 0.00%
D 13320 11215 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 14 188 565 10.0 155 145 42.0
A 7 110 537 9.34 155 145 42.0
A 0 29 485 8.1 155 145 42.0
B 2 9 500 10.26 155 147 34.4
B 12 226 429 8.2 155 147 34.4
B 14 254 408 7.59 155 147 34.4
C 1 80 437 6.63 158 147 43.8
C 1 81 421 6.26 158 147 43.8
C 12 241 410 6.01 158 147 43.8
D 11 82 423 7.21 147 134 40.1
D 7 5 384 6.24 147 134 40.1
D 3 30 380 6.14 147 134 40.1

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