ASTROSAT CZTI

Data Quality Report

Orbit 27576

Creation date: 2024-06-27T19:41:52.164262
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_259T01_9000003972_27576cztM0_level2.evt modeM0/AS1T03_259T01_9000003972_27576cztM0_level2_quad_clean.evt
Size (bytes)792,688,32077,757,120
Size756.0 MB 74.2 MB
Events in quadrant A3,188,831555,003
Events in quadrant B3,377,928569,625
Events in quadrant C3,277,987542,173
Events in quadrant D13,730,471241,705

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132620
B0138010
C0135020
D0450660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6368430.675251%
B6368751.177764%
C6368771.209171%
D6368461572.471734%

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 7628 6370 2 2 0.03% 0.03%
B 7628 6370 5 5 0.07% 0.08%
C 7628 6370 0 0 0.00% 0.00%
D 7628 6370 4561 4561 59.79% 71.60%

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 8 192 12619 72.39 822 806 163.2
A 13 254 10816 61.34 822 806 163.2
A 3 137 7362 40.18 822 806 163.2
B 10 245 95447 615.69 824 804 153.7
B 15 222 28979 183.29 824 804 153.7
B 12 111 18695 116.39 824 804 153.7
C 14 238 129448 699.12 795 801 184.0
C 4 175 21336 111.6 795 801 184.0
C 2 16 12504 63.6 795 801 184.0
D 7 80 11707407 129742.89 376 366 90.2
D 1 52 457346 5064.47 376 366 90.2
D 6 112 106763 1179.14 376 366 90.2

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