ASTROSAT CZTI

Data Quality Report

Orbit 25053

Creation date: 2024-06-27T19:13:15.498694
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/AS1T03_206T01_9000003672_25053cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25053cztM0_level2_quad_clean.evt
Size (bytes)523,474,56091,402,560
Size499.2 MB 87.2 MB
Events in quadrant A3,207,303604,145
Events in quadrant B3,331,818616,884
Events in quadrant C3,458,765577,510
Events in quadrant D5,425,307526,268

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136272
B0139602
C0144722
D0205092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6351560.881751%
B6351500.787278%
C6351801.259644%
D63513265.133050%

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 7506 6352 15 15 0.20% 0.24%
B 7506 6352 8 8 0.11% 0.13%
C 7506 6352 2 2 0.03% 0.03%
D 7506 6352 238 238 3.17% 3.75%

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 15 174 77211 470.72 804 787 162.4
A 10 17 26186 156.44 804 787 162.4
A 13 254 11260 64.51 804 787 162.4
B 0 190 51526 337.58 802 781 150.3
B 0 229 41848 273.19 802 781 150.3
B 5 172 36830 239.81 802 781 150.3
C 0 239 258454 1435.72 768 772 179.5
C 14 238 120797 668.74 768 772 179.5
C 3 233 45280 247.98 768 772 179.5
D 8 195 1214097 6617.64 753 731 183.4
D 12 233 332528 1809.6 753 731 183.4
D 1 52 278897 1517.1 753 731 183.4

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