ASTROSAT CZTI

Data Quality Report

Orbit 35056

Creation date: 2024-06-27T21:08:36.229557
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_057T01_9000005022_35056cztM0_level2.evt modeM0/AS1A10_057T01_9000005022_35056cztM0_level2_quad_clean.evt
Size (bytes)510,065,28097,496,640
Size486.4 MB 93.0 MB
Events in quadrant A2,845,492667,975
Events in quadrant B4,001,916649,233
Events in quadrant C2,931,227647,179
Events in quadrant D5,285,123592,188

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120993
B0155632
C0119262
D0197392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A565890.159067%
B56584137.299399%
C5658150.265111%
D56582935.178508%

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 7391 5659 0 0 0.00% 0.00%
B 7391 5659 288 288 3.90% 5.09%
C 7391 5659 12 12 0.16% 0.21%
D 7391 5659 275 275 3.72% 4.86%

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 10 83 82034 587.25 690 677 138.5
A 15 174 71531 511.44 690 677 138.5
A 9 143 15580 107.57 690 677 138.5
B 5 172 1195500 9448.18 662 644 126.5
B 0 190 134766 1060.55 662 644 126.5
B 4 232 40654 316.37 662 644 126.5
C 15 214 237449 1547.65 661 667 153.0
C 0 10 51868 334.66 661 667 153.0
C 14 67 28919 184.66 661 667 153.0
D 8 195 1266049 7957.0 654 636 159.0
D 13 249 393645 2471.27 654 636 159.0
D 1 47 357715 2245.33 654 636 159.0

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