ASTROSAT CZTI

Data Quality Report

Orbit 29996

Creation date: 2024-06-27T20:09:35.220368
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/AS1A10_071T05_9000004308_29996cztM0_level2.evt modeM0/AS1A10_071T05_9000004308_29996cztM0_level2_quad_clean.evt
Size (bytes)614,361,600122,221,440
Size585.9 MB 116.6 MB
Events in quadrant A3,632,375822,619
Events in quadrant B5,670,956814,069
Events in quadrant C3,684,028783,304
Events in quadrant D5,109,275758,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154901
B0227821
C0155051
D0201211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75271131.501262%
B75271922.550817%
C75281512.005845%
D75283054.051541%

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 8282 7528 0 0 0.00% 0.00%
B 8282 7528 4 4 0.05% 0.05%
C 8283 7529 0 0 0.00% 0.00%
D 8283 7529 207 207 2.50% 2.75%

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 13760 67.9 937 920 189.1
A 8 192 11618 56.57 937 920 189.1
A 3 137 9312 44.38 937 920 189.1
B 6 159 2007780 11260.6 915 890 178.2
B 0 229 32327 176.39 915 890 178.2
B 0 183 29960 163.11 915 890 178.2
C 14 238 146070 688.91 897 906 210.7
C 3 233 19716 89.27 897 906 210.7
C 2 114 17642 79.42 897 906 210.7
D 7 80 1557721 6864.59 899 881 226.8
D 2 250 67922 295.6 899 881 226.8
D 8 195 50426 218.46 899 881 226.8

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