ASTROSAT CZTI

Data Quality Report

Orbit 29026

Creation date: 2024-06-27T19:59:21.536086
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_123T02_9000004160_29026cztM0_level2.evt modeM0/AS1A10_123T02_9000004160_29026cztM0_level2_quad_clean.evt
Size (bytes)499,668,480105,744,960
Size476.5 MB 100.8 MB
Events in quadrant A3,438,407677,864
Events in quadrant B3,583,729701,026
Events in quadrant C3,547,924663,871
Events in quadrant D4,059,661644,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152122
B0154002
C0153562
D0170582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7400821.108108%
B74001391.878378%
C74001401.891892%
D74001051.418919%

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 7401 0 0 0.00% 0.00%
B 7695 7401 1 1 0.01% 0.01%
C 7695 7401 4 4 0.05% 0.05%
D 7695 7401 50 50 0.65% 0.68%

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 12803 66.78 890 869 178.7
A 3 137 9032 45.68 890 869 178.7
A 0 226 7512 37.17 890 869 178.7
B 0 229 30987 175.92 891 866 171.2
B 10 245 22958 129.03 891 866 171.2
B 12 111 21592 121.05 891 866 171.2
C 14 238 138248 672.67 863 868 204.2
C 2 16 25202 119.15 863 868 204.2
C 2 114 17181 79.87 863 868 204.2
D 1 52 356682 1719.2 861 837 207.0
D 8 195 318843 1536.39 861 837 207.0
D 7 80 104559 501.11 861 837 207.0

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