ASTROSAT CZTI

Data Quality Report

Orbit 34263

Creation date: 2022-07-18T15:49:41.386723
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/AS1A11_059T09_9000004888_34263cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34263cztM0_level2_quad_clean.evt
Size (bytes)478,713,60089,807,040
Size456.5 MB 85.6 MB
Events in quadrant A2,536,842598,590
Events in quadrant B3,645,980608,541
Events in quadrant C3,641,526603,553
Events in quadrant D4,338,855562,655

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105000
B0139890
C0141300
D0162590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4941150.303582%
B49413527.124064%
C49411563.157256%
D49413116.294272%

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 7063 4942 8 8 0.11% 0.16%
B 7063 4942 219 219 3.10% 4.43%
C 7063 4942 127 127 1.80% 2.57%
D 7063 4942 255 255 3.61% 5.16%

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 15 169 59114 472.86 622 613 123.7
A 10 83 25432 200.61 622 613 123.7
A 9 143 24037 189.33 622 613 123.7
B 5 172 1003949 8816.41 607 594 113.8
B 0 182 102184 892.66 607 594 113.8
B 0 189 77588 676.54 607 594 113.8
C 0 207 388775 2781.23 613 621 139.6
C 0 239 386523 2765.1 613 621 139.6
C 15 214 217214 1551.95 613 621 139.6
D 8 195 832873 5386.7 593 583 154.5
D 10 199 319084 2061.39 593 583 154.5
D 2 250 176606 1139.25 593 583 154.5

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