ASTROSAT CZTI

Data Quality Report

Orbit 53890

Creation date: 2025-09-14T04:09:45.645906
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/AS1A14_057T04_9000006508_53890cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53890cztM0_level2_quad_clean.evt
Size (bytes)686,678,40082,814,400
Size654.9 MB 79.0 MB
Events in quadrant A4,839,383598,971
Events in quadrant B3,239,001656,662
Events in quadrant C8,789,372424,470
Events in quadrant D8,072,471396,367

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188011
B0138891
C0304402
D0282341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61772864.630079%
B6177661.068480%
C6176195331.622409%
D6176186030.116580%

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 7367 6178 346 346 4.70% 5.60%
B 7367 6178 36 36 0.49% 0.58%
C 7366 6177 1676 1676 22.75% 27.13%
D 7365 6176 1549 1549 21.03% 25.08%

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 12 115 1722403 10403.49 665 649 165.5
A 4 249 225422 1358.16 665 649 165.5
A 15 174 161084 969.41 665 649 165.5
B 5 185 288954 2017.34 668 644 142.9
B 0 213 69041 478.58 668 644 142.9
B 10 245 67599 468.49 668 644 142.9
C 15 224 5364774 34780.83 557 552 154.2
C 13 3 445505 2885.01 557 552 154.2
C 1 241 221819 1434.66 557 552 154.2
D 8 176 4806870 31416.98 531 508 153.0
D 6 239 395423 2581.38 531 508 153.0
D 10 118 149050 970.95 531 508 153.0

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