ASTROSAT CZTI

Data Quality Report

Orbit 34195

Creation date: 2022-01-24T14:48:34.852493
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_047T15_9000004882_34195cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34195cztM0_level2_quad_clean.evt
Size (bytes)512,337,60068,961,600
Size488.6 MB 65.8 MB
Events in quadrant A2,609,162435,223
Events in quadrant B4,413,037430,986
Events in quadrant C3,423,817422,883
Events in quadrant D4,685,357401,910

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114202
B0170191
C0135851
D0178961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A567530.052863%
B56754337.629956%
C56751302.290749%
D56752233.929515%

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 7048 5676 0 0 0.00% 0.00%
B 7048 5676 227 227 3.22% 4.00%
C 7048 5676 109 109 1.55% 1.92%
D 7048 5676 159 159 2.26% 2.80%

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 15615 111.29 665 654 134.4
A 13 6 14598 103.73 665 654 134.4
A 13 254 9656 66.96 665 654 134.4
B 5 31 705764 5716.94 642 627 123.3
B 5 172 597796 4841.58 642 627 123.3
B 5 15 393070 3181.75 642 627 123.3
C 0 239 404364 2748.6 634 638 146.9
C 15 214 258870 1758.06 634 638 146.9
C 0 10 243690 1654.72 634 638 146.9
D 8 195 1156651 7422.7 632 614 155.7
D 13 249 178899 1144.74 632 614 155.7
D 1 52 175924 1125.63 632 614 155.7

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