ASTROSAT CZTI

Data Quality Report

Orbit 27568

Creation date: 2024-06-27T19:41:42.617076
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/AS1A09_038T32_9000003962_27568cztM0_level2.evt modeM0/AS1A09_038T32_9000003962_27568cztM0_level2_quad_clean.evt
Size (bytes)74,476,8005,451,840
Size71.0 MB 5.2 MB
Events in quadrant A457,43924,379
Events in quadrant B466,46224,823
Events in quadrant C557,83824,110
Events in quadrant D711,13422,370

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018310
B018510
C022670
D026530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A875232.628571%
B875232.628571%
C875354.000000%
D8758810.057143%

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 875 875 0 0 0.00% 0.00%
B 875 875 0 0 0.00% 0.00%
C 875 875 0 0 0.00% 0.00%
D 875 875 54 54 6.17% 6.17%

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 1193 40.7 118 115 26.5
A 3 137 1184 40.36 118 115 26.5
A 0 226 981 32.69 118 115 26.5
B 12 111 2944 115.53 117 114 24.5
B 11 111 2672 104.42 117 114 24.5
B 14 111 2562 99.93 117 114 24.5
C 15 208 51217 1727.15 116 116 29.6
C 2 16 33378 1124.22 116 116 29.6
C 14 238 17813 598.14 116 116 29.6
D 1 52 239136 8295.55 115 112 28.8
D 7 80 26097 901.83 115 112 28.8
D 12 233 6489 221.32 115 112 28.8

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