ASTROSAT CZTI

Data Quality Report

Orbit 36825

Creation date: 2024-06-27T21:32:05.591571
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_075T01_9000005244_36825cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36825cztM0_level2_quad_clean.evt
Size (bytes)623,658,24092,341,440
Size594.8 MB 88.1 MB
Events in quadrant A2,592,983643,287
Events in quadrant B10,126,996510,603
Events in quadrant C2,954,430659,195
Events in quadrant D2,867,770624,940

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109273
B0335962
C0118002
D0120412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5096120.235479%
B5096329264.599686%
C5096951.864207%
D5096561.098901%

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 9103 5098 5 5 0.05% 0.10%
B 9102 5095 3097 3097 34.03% 60.79%
C 9103 5098 72 72 0.79% 1.41%
D 9103 5098 42 42 0.46% 0.82%

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 221013 1803.06 604 592 122.2
A 13 6 17805 140.8 604 592 122.2
A 9 143 8589 65.42 604 592 122.2
B 12 1 7313609 78546.94 497 485 93.1
B 0 221 186467 1997.55 497 485 93.1
B 0 190 150720 1613.61 497 485 93.1
C 0 207 217256 1569.3 598 604 138.1
C 15 214 214557 1549.75 598 604 138.1
C 0 10 137870 994.28 598 604 138.1
D 13 249 145140 1000.62 594 579 144.5
D 2 250 103001 708.94 594 579 144.5
D 12 233 100274 690.07 594 579 144.5

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