ASTROSAT CZTI

Data Quality Report

Orbit 41157

Creation date: 2024-06-27T22:25:11.451126
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_025T14_9000005606_41157cztM0_level2.fits modeM0/AS1A12_025T14_9000005606_41157cztM0_level2_quad_clean.evt
Size (bytes)315,296,64090,192,960
Size300.7 MB 86.0 MB
Events in quadrant A2,803,497621,167
Events in quadrant B2,392,551634,676
Events in quadrant C2,838,573582,974
Events in quadrant D3,251,905545,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112483
B0100472
C0113412
D0129182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4940100.202429%
B4940100.202429%
C4940821.659919%
D4940430.870445%

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 9216 4942 2 2 0.02% 0.04%
B 9216 4942 5 5 0.05% 0.10%
C 9216 4942 70 70 0.76% 1.42%
D 9216 4942 24 24 0.26% 0.49%

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 487900 4026.92 593 582 121.0
A 13 254 8736 67.38 593 582 121.0
A 12 189 7893 60.41 593 582 121.0
B 0 245 73749 647.51 583 568 113.0
B 7 202 14258 121.13 583 568 113.0
B 12 111 14122 119.93 583 568 113.0
C 0 10 220928 1663.98 568 572 132.4
C 15 214 216527 1630.75 568 572 132.4
C 9 54 181171 1363.77 568 572 132.4
D 2 16 820401 5838.73 572 556 140.4
D 2 249 119397 846.36 572 556 140.4
D 13 249 57281 403.98 572 556 140.4

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