ASTROSAT CZTI

Data Quality Report

Orbit 07454

Creation date: 2024-06-27T15:19:57.986166
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/AS1A02_108T01_9000001024_07454cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07454cztM0_level2_quad_clean.evt
Size (bytes)407,540,16082,851,840
Size388.7 MB 79.0 MB
Events in quadrant A2,891,943533,269
Events in quadrant B2,947,562545,459
Events in quadrant C2,826,793523,924
Events in quadrant D3,277,809497,047

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123212
B0123831
C0122091
D0137741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5858891.519290%
B5858901.536361%
C5858641.092523%
D5858931.587573%

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 7143 5859 0 0 0.00% 0.00%
B 7143 5859 1 1 0.01% 0.02%
C 7143 5859 0 0 0.00% 0.00%
D 7143 5859 26 26 0.36% 0.44%

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 0 128 30474 199.0 742 728 149.5
A 0 226 7196 43.27 742 728 149.5
A 12 194 6534 38.84 742 728 149.5
B 0 214 28837 198.42 751 733 141.6
B 12 111 14280 95.64 751 733 141.6
B 11 111 11167 73.67 751 733 141.6
C 9 68 27339 160.54 716 722 165.8
C 13 61 5599 29.42 716 722 165.8
C 1 16 5372 28.05 716 722 165.8
D 1 20 195719 1127.99 708 686 172.9
D 12 221 181436 1045.38 708 686 172.9
D 2 14 144582 832.24 708 686 172.9

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