ASTROSAT CZTI

Data Quality Report

Orbit 25552

Creation date: 2024-06-27T19:18:57.387164
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/AS1A09_008T05_9000003724_25552cztM0_level2.evt modeM0/AS1A09_008T05_9000003724_25552cztM0_level2_quad_clean.evt
Size (bytes)910,874,880165,185,280
Size868.7 MB 157.5 MB
Events in quadrant A6,688,1401,056,489
Events in quadrant B6,420,4351,065,721
Events in quadrant C6,444,195993,637
Events in quadrant D7,146,414982,157

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278000
B0269940
C0271380
D0292940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130982361.801802%
B130982672.038479%
C130983082.351504%
D130972581.969917%

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 14103 13100 5 5 0.04% 0.04%
B 14103 13100 0 0 0.00% 0.00%
C 14103 13100 6 6 0.04% 0.05%
D 14103 13100 69 69 0.49% 0.53%

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 6 16 298298 893.58 1658 1627 332.0
A 13 254 17488 47.77 1658 1627 332.0
A 3 137 15758 42.56 1658 1627 332.0
B 12 111 39610 120.5 1638 1596 315.5
B 11 111 36240 109.82 1638 1596 315.5
B 14 111 33569 101.35 1638 1596 315.5
C 14 238 253796 685.65 1571 1583 367.8
C 2 16 66497 176.47 1571 1583 367.8
C 13 61 10836 25.15 1571 1583 367.8
D 1 52 818819 2137.8 1588 1540 382.3
D 8 195 233641 607.12 1588 1540 382.3
D 2 234 50012 126.79 1588 1540 382.3

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