ASTROSAT CZTI

Data Quality Report

Orbit 24395

Creation date: 2024-06-27T19:05:33.469531
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/AS1A08_008T01_9000003596_24395cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24395cztM0_level2_quad_clean.evt
Size (bytes)500,722,560110,632,320
Size477.5 MB 105.5 MB
Events in quadrant A3,388,605719,082
Events in quadrant B3,484,171736,336
Events in quadrant C3,838,372693,500
Events in quadrant D3,949,158685,219

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150542
B0151982
C0159762
D0166232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74151001.348618%
B74151201.618341%
C74152643.560351%
D74151011.362104%

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 7695 7417 0 0 0.00% 0.00%
B 7695 7417 2 2 0.03% 0.03%
C 7695 7417 107 107 1.39% 1.44%
D 7695 7417 11 11 0.14% 0.15%

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 11803 61.68 878 858 177.4
A 3 137 8086 40.73 878 858 177.4
A 0 226 7504 37.45 878 858 177.4
B 15 33 22154 124.82 879 854 170.6
B 12 111 20834 117.09 879 854 170.6
B 11 111 18345 102.5 879 854 170.6
C 7 247 379744 1927.54 843 845 196.6
C 14 238 134557 680.22 843 845 196.6
C 3 233 24303 119.34 843 845 196.6
D 1 52 472883 2265.59 858 832 208.4
D 8 195 156091 745.16 858 832 208.4
D 2 234 30752 143.6 858 832 208.4

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