ASTROSAT CZTI

Data Quality Report

Orbit 33172

Creation date: 2024-06-27T20:45:42.146281
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_080T02_9000004768_33172cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33172cztM0_level2_quad_clean.evt
Size (bytes)454,469,76066,507,840
Size433.4 MB 63.4 MB
Events in quadrant A2,429,647416,496
Events in quadrant B3,265,576421,738
Events in quadrant C2,531,151413,347
Events in quadrant D5,172,852386,144

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107782
B0131811
C0111181
D0192471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A536740.074530%
B53671723.204770%
C5367270.503074%
D53672384.434507%

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 7010 5368 0 0 0.00% 0.00%
B 7010 5368 118 118 1.68% 2.20%
C 7010 5368 23 23 0.33% 0.43%
D 7010 5368 213 213 3.04% 3.97%

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 13 254 9264 69.22 626 612 125.0
A 13 6 6746 49.08 626 612 125.0
A 3 137 5802 41.52 626 612 125.0
B 5 172 595968 5042.56 615 599 118.1
B 0 219 160214 1351.88 615 599 118.1
B 4 81 21257 174.97 615 599 118.1
C 0 10 76538 547.56 602 606 138.7
C 9 187 30562 216.02 602 606 138.7
C 14 67 30421 215.0 602 606 138.7
D 10 203 1021179 6456.71 595 581 158.1
D 8 195 796265 5033.81 595 581 158.1
D 1 47 483295 3053.84 595 581 158.1

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