ASTROSAT CZTI

Data Quality Report

Orbit 34137

Creation date: 2024-06-27T20:57:00.140004
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_059T05_9000004876_34137cztM0_level2.evt modeM0/AS1A11_059T05_9000004876_34137cztM0_level2_quad_clean.evt
Size (bytes)77,564,1608,127,360
Size74.0 MB 7.8 MB
Events in quadrant A523,59241,516
Events in quadrant B513,32242,552
Events in quadrant C671,22443,160
Events in quadrant D569,85841,198

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021312
B021013
C025351
D022641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99840.400802%
B99750.501505%
C998474.709419%
D998111.102204%

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 998 998 0 0 0.00% 0.00%
B 998 998 2 2 0.20% 0.20%
C 998 998 34 34 3.41% 3.41%
D 998 998 7 7 0.70% 0.70%

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 15 169 40998 1564.45 121 119 26.1
A 10 83 8889 335.63 121 119 26.1
A 13 6 2855 104.71 121 119 26.1
B 5 172 31786 1243.83 120 117 25.5
B 0 219 6423 247.67 120 117 25.5
B 12 111 2929 110.44 120 117 25.5
C 0 10 118980 4074.32 117 118 29.2
C 15 214 47862 1636.55 117 118 29.2
C 14 254 43315 1480.69 117 118 29.2
D 8 195 44221 1417.07 119 115 31.1
D 10 118 21508 687.33 119 115 31.1
D 2 250 17388 554.96 119 115 31.1

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