ASTROSAT CZTI

Data Quality Report

Orbit 39221

Creation date: 2024-06-27T22:01:57.115784
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/AS1A12_054T04_9000005446_39221cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39221cztM0_level2_quad_clean.evt
Size (bytes)533,888,64066,142,080
Size509.2 MB 63.1 MB
Events in quadrant A2,381,196544,948
Events in quadrant B2,710,824534,982
Events in quadrant C2,390,135522,639
Events in quadrant D11,900,93958,792

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102352
B0115361
C0102681
D0386611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486780.164372%
B48671633.349086%
C486750.102733%
D4867443091.021163%

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 6180 4868 3 3 0.05% 0.06%
B 6180 4868 113 113 1.83% 2.32%
C 6180 4868 3 3 0.05% 0.06%
D 6179 4867 3558 3558 57.58% 73.10%

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 325801 3005.85 528 517 108.2
A 13 248 7065 60.51 528 517 108.2
A 2 79 6537 55.63 528 517 108.2
B 5 255 474210 4635.79 516 499 102.2
B 5 172 166595 1625.44 516 499 102.2
B 0 190 32819 316.29 516 499 102.2
C 15 214 199025 1650.85 510 512 120.2
C 3 233 178632 1481.26 510 512 120.2
C 0 239 9975 78.7 510 512 120.2
D 12 235 7377286 135307.72 219 212 54.5
D 1 47 3467370 63593.4 219 212 54.5
D 2 249 85494 1564.21 219 212 54.5

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