ASTROSAT CZTI

Data Quality Report

Orbit 33110

Creation date: 2024-06-27T20:44:58.401520
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/AS1A11_008T06_9000004762_33110cztM0_level2.evt modeM0/AS1A11_008T06_9000004762_33110cztM0_level2_quad_clean.evt
Size (bytes)776,387,52064,082,880
Size740.4 MB 61.1 MB
Events in quadrant A2,672,439439,103
Events in quadrant B3,428,624431,925
Events in quadrant C3,493,995427,235
Events in quadrant D13,519,636229,339

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119213
B0141742
C0142242
D0442182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5884100.169952%
B58841602.719239%
C58841161.971448%
D5884468279.571720%

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 7197 5885 1 1 0.01% 0.02%
B 7197 5885 95 95 1.32% 1.61%
C 7197 5885 84 84 1.17% 1.43%
D 7197 5885 4592 4592 63.80% 78.03%

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 13 254 11135 76.32 683 667 137.2
A 15 169 7584 50.43 683 667 137.2
A 3 137 6528 42.73 683 667 137.2
B 5 172 462745 3535.29 673 656 130.7
B 0 189 126708 964.38 673 656 130.7
B 0 219 67489 511.32 673 656 130.7
C 7 221 415464 2709.66 659 664 153.1
C 0 10 173075 1126.27 659 664 153.1
C 1 23 159570 1038.05 659 664 153.1
D 7 223 8665429 77606.92 462 452 111.7
D 8 195 826366 7397.21 462 452 111.7
D 2 249 752636 6736.85 462 452 111.7

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