ASTROSAT CZTI

Data Quality Report

Orbit 37490

Creation date: 2024-06-27T21:40:41.987525
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/AS1C07_001T11_9000005326_37490cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37490cztM0_level2_quad_clean.evt
Size (bytes)449,979,84096,647,040
Size429.1 MB 92.2 MB
Events in quadrant A3,106,620645,220
Events in quadrant B2,974,935669,299
Events in quadrant C2,863,124664,777
Events in quadrant D4,342,979596,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125413
B0122242
C0116542
D0163852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50101112.215569%
B5010891.776447%
C50101132.255489%
D501062612.495010%

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 6952 5011 103 103 1.48% 2.06%
B 6952 5011 65 65 0.93% 1.30%
C 6952 5011 101 101 1.45% 2.02%
D 6952 5011 557 557 8.01% 11.12%

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 13 248 297744 2640.1 561 549 112.6
A 10 83 284652 2523.8 561 549 112.6
A 7 3 169520 1501.03 561 549 112.6
B 15 35 378431 3507.48 573 560 107.7
B 5 172 182637 1690.08 573 560 107.7
B 5 255 36629 334.8 573 560 107.7
C 14 254 216411 1662.42 562 567 129.8
C 15 214 212089 1629.13 562 567 129.8
C 0 10 172054 1320.78 562 567 129.8
D 13 249 1544243 12059.81 529 513 128.0
D 2 250 216221 1685.13 529 513 128.0
D 2 249 156346 1217.38 529 513 128.0

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