ASTROSAT CZTI

Data Quality Report

Orbit 02516

Creation date: 2024-06-27T14:18:56.025629
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/AS1T01_103T01_9000000374_02516cztM0_level2.evt modeM0/AS1T01_103T01_9000000374_02516cztM0_level2_quad_clean.evt
Size (bytes)402,649,92079,202,880
Size384.0 MB 75.5 MB
Events in quadrant A2,831,999487,733
Events in quadrant B2,951,411493,066
Events in quadrant C2,854,386487,612
Events in quadrant D3,110,685473,240

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132423
B0134452
C0133372
D0140462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A654490.137531%
B6544250.382029%
C654470.106968%
D6544250.382029%

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 8764 6546 0 0 0.00% 0.00%
B 8764 6546 0 0 0.00% 0.00%
C 8764 6546 0 0 0.00% 0.00%
D 8764 6546 6 6 0.07% 0.09%

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 12 194 8019 48.5 735 720 150.5
A 0 226 7717 46.49 735 720 150.5
A 13 9 3781 20.34 735 720 150.5
B 5 172 32594 224.64 746 727 141.9
B 12 111 11555 76.33 746 727 141.9
B 5 6 9514 61.94 746 727 141.9
C 0 207 29682 172.65 716 718 167.8
C 10 65 13331 75.18 716 718 167.8
C 2 53 7024 37.59 716 718 167.8
D 11 131 212172 1268.7 702 685 166.7
D 2 184 72576 431.27 702 685 166.7
D 11 130 65053 386.14 702 685 166.7

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