ASTROSAT CZTI

Data Quality Report

Orbit 12708

Creation date: 2024-06-27T16:31:21.622564
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_174T01_9000001876_12708cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12708cztM0_level2_quad_clean.evt
Size (bytes)615,136,32097,729,920
Size586.6 MB 93.2 MB
Events in quadrant A3,084,768693,742
Events in quadrant B5,884,667553,529
Events in quadrant C2,951,673674,708
Events in quadrant D6,301,639617,743

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127692
B0213401
C0124871
D0226941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6002901.499500%
B6002132222.025991%
C6002500.833056%
D6002114519.076974%

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 7288 6004 0 0 0.00% 0.00%
B 7288 6004 1006 1006 13.80% 16.76%
C 7288 6004 0 0 0.00% 0.00%
D 7288 6004 1115 1115 15.30% 18.57%

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 34460 210.95 785 771 159.7
A 8 15 26326 160.02 785 771 159.7
A 15 239 10370 60.11 785 771 159.7
B 4 239 3147968 24926.67 675 662 126.3
B 3 209 31997 248.17 675 662 126.3
B 0 197 23257 178.95 675 662 126.3
C 15 208 19746 110.18 751 758 172.3
C 13 61 5668 28.49 751 758 172.3
C 14 234 4097 19.37 751 758 172.3
D 1 52 3433069 19386.92 702 687 177.0
D 10 157 126270 709.32 702 687 177.0
D 8 195 42445 235.86 702 687 177.0

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