ASTROSAT CZTI

Data Quality Report

Orbit 25001

Creation date: 2024-06-27T19:12:34.324544
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/AS1A07_127T03_9000003662_25001cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_25001cztM0_level2_quad_clean.evt
Size (bytes)434,312,64087,347,520
Size414.2 MB 83.3 MB
Events in quadrant A3,102,415551,500
Events in quadrant B3,176,982565,504
Events in quadrant C3,171,279543,196
Events in quadrant D3,262,859533,765

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133741
B0135161
C0133801
D0138861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6463570.881943%
B6464801.237624%
C6464961.485149%
D6464350.541460%

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 7074 6464 0 0 0.00% 0.00%
B 7075 6465 1 1 0.01% 0.02%
C 7075 6465 0 0 0.00% 0.00%
D 7075 6465 2 2 0.03% 0.03%

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 9539 53.62 804 787 163.2
A 3 137 7394 40.48 804 787 163.2
A 0 226 7035 38.28 804 787 163.2
B 12 111 18859 117.74 801 781 153.5
B 11 111 17181 106.81 801 781 153.5
B 14 111 15170 93.72 801 781 153.5
C 14 238 120821 655.39 777 783 183.2
C 7 247 19167 100.37 777 783 183.2
C 13 61 5153 23.86 777 783 183.2
D 8 195 230753 1210.97 788 765 189.9
D 2 234 26582 135.93 788 765 189.9
D 7 238 15313 76.6 788 765 189.9

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