ASTROSAT CZTI

Data Quality Report

Orbit 14142

Creation date: 2024-06-27T16:50:53.879312
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/AS1A04_218T04_9000002086_14142cztM0_level2.evt modeM0/AS1A04_218T04_9000002086_14142cztM0_level2_quad_clean.evt
Size (bytes)494,357,76072,993,600
Size471.5 MB 69.6 MB
Events in quadrant A3,371,198443,432
Events in quadrant B3,448,461440,608
Events in quadrant C3,576,540448,735
Events in quadrant D4,145,169435,050

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137993
B0141432
C0143652
D0168762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63431342.112565%
B63431372.159861%
C63431161.828788%
D63431352.128330%

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 7604 6345 0 0 0.00% 0.00%
B 7604 6345 4 4 0.05% 0.06%
C 7604 6345 0 0 0.00% 0.00%
D 7604 6345 15 15 0.20% 0.24%

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 12 189 39502 223.27 864 847 173.1
A 9 143 8048 41.59 864 847 173.1
A 0 226 7646 39.27 864 847 173.1
B 0 189 34430 208.16 856 838 161.4
B 3 209 26322 157.91 856 838 161.4
B 0 230 23819 142.4 856 838 161.4
C 3 233 292501 1511.18 840 848 193.0
C 14 234 7025 32.01 840 848 193.0
C 13 61 5936 26.36 840 848 193.0
D 8 195 623571 3143.35 839 819 198.1
D 2 152 121692 610.11 839 819 198.1
D 7 80 113651 569.52 839 819 198.1

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