ASTROSAT CZTI

Data Quality Report

Orbit 30555

Creation date: 2024-06-27T20:16:53.951213
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_055T01_9000004400_30555cztM0_level2.evt modeM0/AS1A10_055T01_9000004400_30555cztM0_level2_quad_clean.evt
Size (bytes)571,772,16084,432,960
Size545.3 MB 80.5 MB
Events in quadrant A4,149,030528,683
Events in quadrant B5,191,548545,006
Events in quadrant C3,817,295523,238
Events in quadrant D3,731,931520,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164442
B0196582
C0155182
D0151932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62942734.337464%
B62941492.367334%
C62943335.290753%
D6294420.667302%

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 7569 6295 165 165 2.18% 2.62%
B 7569 6295 11 11 0.15% 0.17%
C 7569 6295 72 72 0.95% 1.14%
D 7569 6295 7 7 0.09% 0.11%

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 0 13 726729 4220.53 881 868 172.0
A 8 192 25510 143.28 881 868 172.0
A 13 254 10305 54.87 881 868 172.0
B 6 159 1669615 10336.13 879 862 161.4
B 4 171 52994 322.9 879 862 161.4
B 12 111 19037 112.57 879 862 161.4
C 0 10 285564 1496.91 837 845 190.2
C 14 238 163747 856.46 837 845 190.2
C 3 233 51015 263.77 837 845 190.2
D 1 52 176441 867.39 869 850 202.4
D 8 195 156448 768.63 869 850 202.4
D 2 250 47071 228.32 869 850 202.4

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