ASTROSAT CZTI

Data Quality Report

Orbit 41145

Creation date: 2024-06-27T22:25:00.261678
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/AS1A12_052T04_9000005602_41145cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41145cztM0_level2_quad_clean.evt
Size (bytes)360,982,08089,337,600
Size344.3 MB 85.2 MB
Events in quadrant A2,946,879610,885
Events in quadrant B3,592,286588,543
Events in quadrant C2,863,043579,648
Events in quadrant D3,535,554543,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120153
B0144462
C0120182
D0144855

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5458210.384756%
B54582765.056797%
C5458821.502382%
D54571122.052410%

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 7070 5459 8 8 0.11% 0.15%
B 7070 5459 222 222 3.14% 4.07%
C 7070 5459 72 72 1.02% 1.32%
D 7070 5459 108 108 1.53% 1.98%

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 530332 4362.72 593 580 121.4
A 2 79 61609 502.6 593 580 121.4
A 9 191 59670 486.63 593 580 121.4
B 0 245 1216626 11100.23 572 556 109.6
B 0 186 68914 623.97 572 556 109.6
B 5 255 46341 417.92 572 556 109.6
C 15 214 232155 1742.75 570 573 132.9
C 9 54 220941 1658.36 570 573 132.9
C 0 10 147625 1106.63 570 573 132.9
D 2 16 661891 4735.3 571 555 139.7
D 13 249 456238 3262.78 571 555 139.7
D 9 19 83369 592.96 571 555 139.7

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