ASTROSAT CZTI

Data Quality Report

Orbit 49694

Creation date: 2024-12-09T23:11:10.511388
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/AS1T05_233T01_9000006438_49694cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49694cztM0_level2_quad_clean.evt
Size (bytes)1,141,729,92038,545,920
Size1.1 GB 36.8 MB
Events in quadrant A14,434,093104,703
Events in quadrant B5,793,161578,897
Events in quadrant C7,319,0661,724
Events in quadrant D14,258,47367,740

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468661
B0212491
C0258741
D0464021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5920513486.722973%
B592187214.727242%
C5921590799.763553%
D5921536490.592805%

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 7044 5919 5103 5103 72.44% 86.21%
B 7046 5922 621 621 8.81% 10.49%
C 7045 5920 442 442 6.27% 7.47%
D 7045 5920 5214 5214 74.01% 88.07%

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 10 83 5493678 50005.52 396 384 109.9
A 4 253 2690210 24485.52 396 384 109.9
A 12 50 1032605 9396.32 396 384 109.9
B 5 172 1917508 14346.32 634 614 133.6
B 4 206 286926 2142.8 634 614 133.6
B 1 255 234825 1752.87 634 614 133.6
C 15 180 2583376 104883.59 43 40 24.6
C 15 190 1929627 78341.35 43 40 24.6
C 15 181 760307 30866.88 43 40 24.6
D 15 40 3547557 38202.24 273 262 92.9
D 15 168 2431784 26186.03 273 262 92.9
D 7 45 1081624 11645.62 273 262 92.9

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